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Pentax 645Z Review | 108 Data compared

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  • Avg. price in UK: ~£3,310
  • Avg. price in US: ~$2,320
  • Sensor size: medium format
  • Lens mount: Pentax 645AF2
  • Main camera pixel size: 5.3 µm
  • Weight: 1550 g
  • Battery life (CIPA): 650 shots

Pentax 645Z review. Compare 108 technical specifications and user reviews to see how it ranks among cameras and if it is worth buying.

6.2

Overall score

What it is: An overall evaluation of the camera's quality, based on technical analyses and user reviews.

When it matters: When you need a quick reference to identify the best cameras on the market.

Score components:

90.0%

6.1

Technical Score

10.0%

7.3

User score

Good
6.1

Technical Score

What it is: An assessment of the camera's technical performance, covering eight key areas: image quality, autofocus, video features, stabilization, lens compatibility, connectivity, battery, and design.

When it matters: When you want to compare cameras based on technical performance and available features.

Score components:

28.0%

8.8

Sensor & Image

25.0%

4.9

Photo Features

18.0%

4.4

Video & Audio

14.0%

4.2

Display & Design

8.0%

8.9

Battery & Power

7.0%

4.4

Connectivity & Storage

Good
7.3

User score

What it is: A rating that combines user reviews and the total number of reviews received by the camera.

When it matters: When real-world owner satisfaction and review volume matter to your decision.

Score components:

70.0%

10

User reviews

30.0%

1.0

Popularity

User score:
United Kingdom
amazon
5.0
(1)

(Reviews last updated: July 2026)

Very good
  • 8.7
    Professional photography

    Score components:

    25.0%

    10

    Sensor size

    20.0%

    9.5

    Main camera megapixels

    20.0%

    10

    Dual card slots

    15.0%

    2.0

    N. of focus points

    10.0%

    10

    RAW photo capture

    10.0%

    10

    Phase-detection autofocus (photos)

  • 3.7
    Travel

    Score components:

    35.0%

    1.0

    Weight

    30.0%

    10

    Battery life (CIPA)

    20.0%

    1.0

    Sensor-shift stabilization

    15.0%

    1.0

    GPS

  • 4.6
    Beginners

    Score components:

    30.0%

    1.0

    Price

    20.0%

    1.0

    Weight

    20.0%

    10

    AF tracking

    20.0%

    10

    Battery life (CIPA)

    10.0%

    1.0

    Touchscreen

  • 8.5
    Landscape photography

    Score components:

    30.0%

    9.5

    Main camera megapixels

    25.0%

    10

    Sensor size

    20.0%

    10

    Main camera pixel size

    15.0%

    1.0

    Sensor-shift stabilization

    10.0%

    10

    RAW photo capture

  • 2.3
    Street photography

    Score components:

    30.0%

    1.0

    Weight

    25.0%

    1.0

    Thickness

    20.0%

    7.7

    AF low-light sensitivity

    15.0%

    1.0

    Sensor-shift stabilization

    10.0%

    1.0

    Eye detection AF (human)

  • 7.2
    Portraits

    Score components:

    30.0%

    10

    Sensor size

    25.0%

    10

    Main camera pixel size

    20.0%

    1.0

    Eye detection AF (human)

    15.0%

    9.5

    Main camera megapixels

    10.0%

    1.0

    Sensor-shift stabilization

  • 4.3
    Hiking

    Score components:

    30.0%

    1.0

    Weight

    25.0%

    10

    Battery life (CIPA)

    20.0%

    6.4

    Min operating temperature

    15.0%

    1.0

    Sensor-shift stabilization

    10.0%

    1.0

    GPS

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Available: ranking among products currently available (including other versions of this product).
All: ranking among all products in the database.

Verdict

The Pentax 645Z is a professional medium-format digital SLR featuring a 51.4-megapixel CMOS sensor (43.8 x 32.8 mm) and the PRIME III image processor, delivering exceptional resolution and a native ISO range of 100 to 204,800. Key characteristics include a 27-point SAFOX 11 autofocus system, 3 fps continuous shooting, and a weather-sealed magnesium alloy body capable of operating in temperatures as low as -10°C. Main pros include its class-leading dynamic range, a 3.2-inch tiltable LCD with live view, dual SD card slots, and compatibility with a vast range of legacy Pentax 645 lenses. However, it is notable for its significant bulk and 1.55 kg weight, a relatively slow flash sync speed of 1/125 sec, and video quality that suffers from rolling shutter and a lack of modern codecs.

Technical Specifications of Pentax 645Z

Technical Score

What it is: An assessment of the camera's technical performance, covering eight key areas: image quality, autofocus, video features, stabilization, lens compatibility, connectivity, battery, and design.

When it matters: When you want to compare cameras based on technical performance and available features.

Score components:

28.0%

8.8

Sensor & Image

25.0%

4.9

Photo Features

18.0%

4.4

Video & Audio

14.0%

4.2

Display & Design

8.0%

8.9

Battery & Power

7.0%

4.4

Connectivity & Storage

6.1
Pentax 645Z has a technical score of 6.1 points, which is higher than 74.3% of cameras.
User score

What it is: A rating that combines user reviews and the total number of reviews received by the camera.

When it matters: When real-world owner satisfaction and review volume matter to your decision.

Score components:

70.0%

10

User reviews

30.0%

1.0

Popularity

User score:
United Kingdom
amazon
5.0
(1)

(Reviews last updated: July 2026)

7.3
Pentax 645Z has a user score of 7.3 points, which is lower than 91.9% of cameras.
Popularity
What it is: An indicator based on the number of reviews received by the camera.
When it matters: When you want to see which cameras attract the most buyer attention and review activity.
1.0
Pentax 645Z has a popularity of 1 points, which is higher than 0% of products in this category.
Ratio quality/price

What it is: An indicator that combines the camera's overall rating with its cost.

When it matters: When you want to know how much overall quality you get for the price.

Score components:

60.0%

6.2

Overall score

40.0%

1.0

Price

4.7
Pentax 645Z has a quality-to-price ratio of 4.7 points, which is lower than 95.6% of products in this category.
Sensor size
What it is: The sensor format value describes the physical light-collecting area.
When it matters: When you shoot in more difficult lighting.

Importance: HIGH

Good value: Full frame or larger

medium format
Pentax 645Z uses a sensor classified as medium format; it is larger than the sensor in 97.9% of cameras and the same size as the sensor in 2.1% of cameras.
Main camera megapixels
What it is: The effective resolution of the camera sensor, measured in megapixels (MP). Higher megapixels can capture more detail.
When it matters: When you want high-resolution photos that allow more cropping or larger prints.

Importance: HIGH

Good value: At least 20 MP

51.4 MP
Pentax 645Z has a main camera resolution of 51.4 MP, which is higher than that of 97.5% of cameras and equal to that of 0.3% of cameras.
Main camera pixel size
What it is: The physical size of individual pixels on the camera sensor, measured in micrometers. Larger pixels typically capture more light for better low-light performance.
When it matters: When you shoot in low light and want reduced noise in your photos.

Importance: HIGH

Good value: At least 3.5 µm

5.3 µm
Pentax 645Z has a main camera pixel size of 5.3 µm which is larger than in 86.1% of cameras and equal to the size in 0.4% of cameras.
Base ISO
What it is: The native ISO setting that delivers the sensor’s standard balance of image quality and dynamic range.
When it matters: When you want the best native image quality and compare cameras at their most optimal sensitivity setting.

Importance: LOW

100
Pentax 645Z has a base ISO of 100 which is higher than that of 20.3% of cameras and equal to that of 52% of cameras.
Max ISO
What it is: The ISO ceiling shows the highest sensor sensitivity available for darker scenes.
When it matters: When you shoot in more difficult lighting.

Importance: MEDIUM

Good value: At least ISO 25,600

204,800
Pentax 645Z reaches a maximum sensitivity of ISO 204,800, which is higher than that of 99.6% of cameras and equal to that of 0.1% of cameras.
Show more
Lens mount
What it is: The mechanical and electronic interface that determines which interchangeable lenses the camera can use.
When it matters: When lens availability, upgrade options, and long-term system compatibility are central to your buying decision.

Importance: LOW

Pentax 645AF2
Built-in focus motor
What it is: Indicates whether the camera body includes an internal autofocus motor for driving compatible lenses.
When it matters: When you plan to use older or budget lenses that depend on the camera body for autofocus drive.

Importance: LOW

yes
Pentax 645Z has a built-in focus motor. 10.9% of cameras have a built-in focus motor.
N. of focus points
What it is: The total number of selectable autofocus points available for positioning and tracking focus.
When it matters: When you want more flexibility in placing focus precisely or tracking subjects across the frame.

Importance: HIGH

Good value: At least 200 points

27
Pentax 645Z has 27 focus points, more than the number offered by 55.1% of cameras and equal to the number offered by 0.4% of cameras.
Phase-detection autofocus (photos)
What it is: Autofocus technology that measures phase differences to lock focus quickly and accurately for still photography.
When it matters: When you want faster and more reliable autofocus for still photos, especially with moving subjects.

Importance: HIGH

yes
Pentax 645Z supports phase-detection autofocus for photos. 37.3% of cameras support phase-detection autofocus for photos.
AF tracking
What it is: An autofocus mode that continuously follows a moving subject to keep it sharp during shooting.
When it matters: When your subjects move unpredictably and you need the camera to keep focus on them automatically.

Importance: MEDIUM

yes
Pentax 645Z supports AF tracking. This feature is available on 88% of cameras.
Show more
Max video resolution
What it is: The highest video resolution the camera can record, defining the maximum level of captured image detail.
When it matters: When you care about recording the highest level of detail for cropping, editing, or future-proof video work.

Importance: HIGH

Good value: At least 3840 px

1920 px
Pentax 645Z supports 1920 px video recording which is higher quality than that of 28.7% of cameras and equal to that of 47.1% of cameras.
4K time-lapse only
Video bitrate
What it is: The amount of video data recorded per second, which affects file size and potential recording quality.
When it matters: When you compare potential video quality and want fewer compression artifacts in demanding scenes.

Importance: MEDIUM

Good value: At least 200 Mbps

17 Mbps
Pentax 645Z has a video bitrate of 17 Mbps which is lower than that of 77.1% of cameras and equal to that of 3.6% of cameras.
Video bit depth
What it is: The number of bits used per color channel in recorded video, affecting gradation smoothness and editing flexibility.
When it matters: When you color grade video and want smoother gradients with fewer banding issues.

Importance: MEDIUM

Good value: At least 10-bit

8 bit
Pentax 645Z supports video at 8 bit, a bit depth higher than that of 7.8% of cameras and equal to that of 80.6% of cameras.
Video chroma subsampling
What it is: The color sampling format used in video recording, indicating how much color detail is retained relative to brightness detail.
When it matters: When color grading, keying, or serious post-production work is important in your video workflow.

Importance: LOW

4:2:0
Pentax 645Z supports 4:2:0 video chroma subsampling which is more advanced than that of 7.8% of cameras and equal to that of 69.9% of cameras.
Video codecs
What it is: The video compression formats the camera can use when recording, affecting compatibility, efficiency, and workflow.
When it matters: When compatibility, editing performance, and file efficiency matter in the way you handle video.

Importance: LOW

H.264, Motion JPEG
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Type
What it is: The camera type identifies the overall design, such as mirrorless, DSLR, compact, or bridge.
When it matters: When you want a camera style that matches how you shoot, carry, and swap lenses.

Importance: LOW

dslr
Weight
What it is: The total weight of the camera body, which affects comfort while carrying and shooting.
When it matters: When you carry the camera all day, travel often, or prefer a lighter setup.

Importance: MEDIUM

Good value: 500 g or less

1,550 g
Pentax 645Z weighs 1,550 g which is heavier than 99.7% of cameras.
Width
What it is: The width of the camera body, measured from side to side.
When it matters: When compact packing, grip comfort, or bag fit matters to you.

Importance: LOW

156 mm
Pentax 645Z has a width of 156 mm which is wider than 96.7% of cameras and equal to that of 0.3% of cameras.
Height
What it is: The height of the camera body, measured from top to bottom.
When it matters: When you care about how compact the camera feels in a bag or in hand.

Importance: LOW

117 mm
Pentax 645Z has a height of 117 mm which is taller than 95.6% of cameras and equal to that of 0.2% of cameras.
Thickness
What it is: The depth of the device profile, excluding the camera bump unless specified.
When it matters: When you prefer a sleek, slim profile that slides easily into tight pockets.

Importance: LOW

123 mm
Pentax 645Z has a thickness of 123 mm which is thicker than 97.7% of cameras.
Show more
Battery life (CIPA)
What it is: The official battery endurance estimate measured under CIPA test methodology, usually expressed in shots per charge.
When it matters: When you need realistic expectations for how many shots you can take before carrying a spare battery.

Importance: MEDIUM

Good value: At least 400 shots

650 shots
Pentax 645Z has a CIPA-rated battery life of 650 shots, which is longer than that of 88.3% of cameras and equal to that of 0.4% of cameras.
Battery capacity
What it is: The amount of electric charge the battery can hold, measured in milliampere-hours (mAh).
When it matters: When you want a general idea of how large the battery is physically.

Importance: LOW

Good value: At least 1,500 mAh

1,860 mAh
Pentax 645Z has a battery capacity of 1,860 mAh which is larger than the batteries in 82.6% of cameras and equal to those in 2.6% of cameras.
Removable battery
What it is: Indicates whether the flight battery can be removed and swapped by the user.
When it matters: When you want to swap batteries quickly between flights.

Importance: LOW

yes
Pentax 645Z has a removable battery, and 98.7% of cameras include one.
USB Power Delivery (PD)
What it is: Support for the USB Power Delivery standard for higher-power charging or external power supply over USB-C.
When it matters: When you want faster USB-C charging or the ability to power the camera externally for longer sessions.

Importance: LOW

no
Pentax 645Z does not support USB Power Delivery. 10.1% of cameras support USB Power Delivery.
Wi-Fi connectivity
What it is: Indicates whether the camera has built-in Wi-Fi for image transfer, remote control, or network features.
When it matters: When you want to transfer photos wirelessly, control the camera from a phone, or use supported network workflows.

Importance: LOW

no
Pentax 645Z does not support Wi-Fi. 47.9% of cameras include this feature.
Wi-Fi version
What it is: The specific generation of Wi-Fi standards supported (e.g., Wi-Fi 6, Wi-Fi 7), determining maximum speed and efficiency.
When it matters: When you have a high-speed router and want faster downloads with less congestion.

Importance: LOW

N/A
Bluetooth connectivity
What it is: Indicates whether the camera supports Bluetooth for pairing, remote control, or file transfer.
When it matters: When you want quick wireless pairing with a phone, remote control, or location syncing.

Importance: LOW

no
Pentax 645Z does not have Bluetooth. 22.7% of cameras support Bluetooth.
Bluetooth version
What it is: The Bluetooth version supported by the camera for wireless pairing and low-power connections.
When it matters: When you want more efficient wireless pairing, better range, or newer Bluetooth features.

Importance: LOW

N/A
USB Type-C
What it is: A modern, reversible connector used for charging, data transfer, and sometimes audio or video output.
When it matters: When you want a reversible cable that handles charging, data, and accessories universally.

Importance: LOW

no
Pentax 645Z does not include USB Type-C. 14.6% of cameras use USB-C.
Show more

Pentax 645Z vs the average camera

  • 198,400 higher max ISO
    Pentax 645Z has a higher max ISO than the average camera (204,800 vs 6,400). The average camera reaches a max ISO of 6,400.
    What it is: The ISO ceiling shows the highest sensor sensitivity available for darker scenes.
    When it matters: When you shoot in more difficult lighting.

    Importance: MEDIUM

    Good value: At least ISO 25,600

    Pentax 645Z has a higher max ISO than the average camera (204,800 vs 6,400). The average camera reaches a max ISO of 6,400.204,800 vs 6,400
  • Phase-detect AF for photos
    Pentax 645Z supports phase-detection autofocus for photos, the average camera does not.
    What it is: Autofocus technology that measures phase differences to lock focus quickly and accurately for still photography.
    When it matters: When you want faster and more reliable autofocus for still photos, especially with moving subjects.

    Importance: HIGH

    Pentax 645Z supports phase-detection autofocus for photos, the average camera does not.
  • 35.2 MP higher resolution on the main camera
    Pentax 645Z has a higher main camera resolution than the average camera (51.4 MP vs 16.2 MP). The average camera has a main camera resolution of 16.2 MP.
    What it is: The effective resolution of the camera sensor, measured in megapixels (MP). Higher megapixels can capture more detail.
    When it matters: When you want high-resolution photos that allow more cropping or larger prints.

    Importance: HIGH

    Good value: At least 20 MP

    Pentax 645Z has a higher main camera resolution than the average camera (51.4 MP vs 16.2 MP). The average camera has a main camera resolution of 16.2 MP.51.4 MP vs 16.2 MP
  • Larger sensor
    Pentax 645Z has a larger sensor than the average camera (medium format vs APS-C).
    What it is: The sensor format value describes the physical light-collecting area.
    When it matters: When you shoot in more difficult lighting.

    Importance: HIGH

    Good value: Full frame or larger

    Pentax 645Z has a larger sensor than the average camera (medium format vs APS-C).medium format vs APS-C
  • 3,663 points higher DxOMark Sports score
    Pentax 645Z has a higher DxOMark sports score than the average camera (4,505 points vs 842 points). The average camera has a DxOMark sports score of 842 points.
    What it is: The DxOMark low-light score, reflecting how well the sensor performs at higher sensitivities.
    When it matters: When low-light sensor performance is especially important for the way you shoot.

    Importance: MEDIUM

    Pentax 645Z has a higher DxOMark sports score than the average camera (4,505 points vs 842 points). The average camera has a DxOMark sports score of 842 points.4505 points vs 842 points
  • 1.96 µm larger main-camera pixels
    Pentax 645Z has a higher main camera pixel size than the average camera (5.3 µm vs 3.34 µm). The average camera has a main camera pixel size of 3.34 µm.
    What it is: The physical size of individual pixels on the camera sensor, measured in micrometers. Larger pixels typically capture more light for better low-light performance.
    When it matters: When you shoot in low light and want reduced noise in your photos.

    Importance: HIGH

    Good value: At least 3.5 µm

    Pentax 645Z has a higher main camera pixel size than the average camera (5.3 µm vs 3.34 µm). The average camera has a main camera pixel size of 3.34 µm.5.3 µm vs 3.34 µm
  • 179,500 higher expanded ISO
    Pentax 645Z has a higher expanded ISO than the average camera (204,800 vs 25,300). The average camera reaches an expanded ISO of 25,300.
    What it is: The highest extended ISO setting available beyond the standard sensitivity range of the sensor.
    When it matters: When you shoot in very dark conditions and want the option to push sensitivity beyond the normal ISO range.

    Importance: MEDIUM

    Pentax 645Z has a higher expanded ISO than the average camera (204,800 vs 25,300). The average camera reaches an expanded ISO of 25,300.204,800 vs 25,300
  • Dual card slots
    Pentax 645Z offers dual card slots, the average camera does not. 13.3% of cameras offer them.
    2 SD UHS-I
    What it is: Indicates whether the camera offers two memory card slots for backup, overflow, or file separation.
    When it matters: When you want backup recording, overflow capacity, or separate file handling for more demanding shoots.

    Importance: LOW

    Pentax 645Z offers dual card slots, the average camera does not. 13.3% of cameras offer them.
  • 0.2 in larger screen
    Pentax 645Z has a larger screen than the average camera (3.2 in vs 3 in). The average camera has a screen size of 3 in.
  • Better viewfinder type
    Pentax 645Z uses a more advanced viewfinder than the average camera (optical vs none).
  • 198,400 higher max ISO
    Pentax 645Z has a higher max ISO than the average camera (204,800 vs 6,400). The average camera reaches a max ISO of 6,400.
  • 35.2 MP higher resolution on the main camera
    Pentax 645Z has a higher main camera resolution than the average camera (51.4 MP vs 16.2 MP). The average camera has a main camera resolution of 16.2 MP.
  • Larger sensor
    Pentax 645Z has a larger sensor than the average camera (medium format vs APS-C).
  • 3,663 points higher DxOMark Sports score
    Pentax 645Z has a higher DxOMark sports score than the average camera (4,505 points vs 842 points). The average camera has a DxOMark sports score of 842 points.
  • 179,500 higher expanded ISO
    Pentax 645Z has a higher expanded ISO than the average camera (204,800 vs 25,300). The average camera reaches an expanded ISO of 25,300.
  • 1.96 µm larger main-camera pixels
    Pentax 645Z has a higher main camera pixel size than the average camera (5.3 µm vs 3.34 µm). The average camera has a main camera pixel size of 3.34 µm.
  • Higher DxOMark landscape score
    Pentax 645Z has a higher DxOMark landscape score than the average camera (14.7 vs 12.4). The average camera scores 12.4.
  • 28 points higher DxOMark sensor score
    Pentax 645Z has a higher DxOMark sensor score than the average camera (101 points vs 73 points). The average camera has a DxOMark sensor score of 73 points.
  • Sensor cleaning system
    Pentax 645Z includes a sensor cleaning system, the average camera does not.
  • Higher DxOMark portrait score
    Pentax 645Z has a higher DxOMark portrait score than the average camera (26 vs 23.0). The average camera scores 23.0.
  • Phase-detect AF for photos
    Pentax 645Z supports phase-detection autofocus for photos, the average camera does not.
  • Built-in AF motor
    Pentax 645Z has a built-in focus motor, the average camera does not.
  • Has microphone input
    Pentax 645Z has microphone input, the average camera does not.
  • Built-in timelapse
    Pentax 645Z includes timelapse capture, the average camera does not.
  • Supports 24p cinema mode
    Pentax 645Z supports 24p cinema mode, the average camera does not. 44% of cameras support this mode.
  • 320 shots longer battery life
    Pentax 645Z has longer battery life than the average camera (650 shots vs 330 shots). The average camera delivers 330 shots per charge.
  • 740 mAh larger battery capacity
    Pentax 645Z has a higher battery capacity than the average camera (1,860 mAh vs 1,120 mAh). The average camera has a battery capacity of 1,120 mAh.
  • Dual card slots
    Pentax 645Z offers dual card slots, the average camera does not. 13.3% of cameras offer them.
  • Newer USB version
    Pentax 645Z supports a newer USB version than the average camera (USB 3.2 Gen 1 vs USB 2.0). The average camera uses USB 2.0.

Total
Display & Design
Sensor & Image
Photo Features
Video & Audio
Battery & Power
Connectivity & Storage
  • 3.92x heavier
    Pentax 645Z is heavier than the average camera (1,550 g vs 395 g). The average camera weighs 395 g.
  • 2 % lower viewfinder coverage
    Pentax 645Z has a lower viewfinder coverage than the average camera (98% vs 100%). The average camera has viewfinder coverage of 100%.
  • 20.5% lower magnification
    Pentax 645Z has a lower viewfinder magnification than the average camera (0.6x vs 0.78x). The average camera has a viewfinder magnification of 0.78x.
  • 77 mm thicker
    Pentax 645Z is thicker than the average camera (123 mm vs 46 mm). The average camera has a thickness of 46 mm.
  • No flash
    Pentax 645Z does not have a built-in flash, the average camera does. 73.4% of cameras have a flash.
  • 43.1 mm taller body
    Pentax 645Z is taller than the average camera (117 mm vs 73.9 mm). The average camera has a height of 73.9 mm.
  • 36.1 mm wider
    Pentax 645Z is wider than the average camera (156 mm vs 119.9 mm). The average camera has a width of 119.9 mm.
  • 2.7 fps slower mechanical burst
    Pentax 645Z has a slower mechanical burst rate than the average camera (3 fps vs 5.7 fps). The average camera shoots at 5.7 fps.
  • Worse low-light autofocus
    Pentax 645Z has a worse low-light AF sensitivity than the average camera (-3 EV vs -4 EV). The average camera reaches a low-light AF sensitivity of -4 EV.
  • No continuous video AF
    Pentax 645Z does not support continuous autofocus in video, the average camera does.
    no video recording
  • 43.3% lower video bitrate
    Pentax 645Z has a lower video bitrate than the average camera (17 Mbps vs 30 Mbps). The average camera records at 30 Mbps.
  • 3.92x heavier
    Pentax 645Z is heavier than the average camera (1,550 g vs 395 g). The average camera weighs 395 g.
    What it is: The total weight of the camera body, which affects comfort while carrying and shooting.
    When it matters: When you carry the camera all day, travel often, or prefer a lighter setup.

    Importance: MEDIUM

    Good value: 500 g or less

    Pentax 645Z is heavier than the average camera (1,550 g vs 395 g). The average camera weighs 395 g.1550 g vs 395 g
  • No continuous video AF
    Pentax 645Z does not support continuous autofocus in video, the average camera does.
    no video recording
    What it is: The ability of the camera to keep adjusting focus automatically while video recording is in progress.
    When it matters: When you film while subjects or camera distance keep changing and manual refocusing is impractical.

    Importance: LOW

    Pentax 645Z does not support continuous autofocus in video, the average camera does.
  • 2.7 fps slower mechanical burst
    Pentax 645Z has a slower mechanical burst rate than the average camera (3 fps vs 5.7 fps). The average camera shoots at 5.7 fps.
    What it is: The maximum burst rate the camera can achieve using its mechanical shutter, measured in frames per second.
    When it matters: When you photograph sports, wildlife, or action and want more chances to catch the exact moment.

    Importance: MEDIUM

    Good value: At least 10 fps

    Pentax 645Z has a slower mechanical burst rate than the average camera (3 fps vs 5.7 fps). The average camera shoots at 5.7 fps.3 fps vs 5.7 fps
  • 2 % lower viewfinder coverage
    Pentax 645Z has a lower viewfinder coverage than the average camera (98% vs 100%). The average camera has viewfinder coverage of 100%.
    What it is: The percentage of the final image area that is visible through the viewfinder when composing a shot.
    When it matters: When you want the framed view to closely match what will actually appear in the final photo.

    Importance: LOW

    Good value: 100%

    Pentax 645Z has a lower viewfinder coverage than the average camera (98% vs 100%). The average camera has viewfinder coverage of 100%.98 % vs 100 %
  • 20.5% lower magnification
    Pentax 645Z has a lower viewfinder magnification than the average camera (0.6x vs 0.78x). The average camera has a viewfinder magnification of 0.78x.
    What it is: The apparent size of the image seen through the viewfinder relative to the real scene.
    When it matters: When you want a larger, more immersive view through the finder for easier composition and manual focus.

    Importance: LOW

    Pentax 645Z has a lower viewfinder magnification than the average camera (0.6x vs 0.78x). The average camera has a viewfinder magnification of 0.78x.0.62 x vs 0.78 x
  • 77 mm thicker
    Pentax 645Z is thicker than the average camera (123 mm vs 46 mm). The average camera has a thickness of 46 mm.
    What it is: The depth of the device profile, excluding the camera bump unless specified.
    When it matters: When you prefer a sleek, slim profile that slides easily into tight pockets.

    Importance: LOW

    Pentax 645Z is thicker than the average camera (123 mm vs 46 mm). The average camera has a thickness of 46 mm.123 mm vs 46 mm
  • 43.3% lower video bitrate
    Pentax 645Z has a lower video bitrate than the average camera (17 Mbps vs 30 Mbps). The average camera records at 30 Mbps.
    What it is: The amount of video data recorded per second, which affects file size and potential recording quality.
    When it matters: When you compare potential video quality and want fewer compression artifacts in demanding scenes.

    Importance: MEDIUM

    Good value: At least 200 Mbps

    Pentax 645Z has a lower video bitrate than the average camera (17 Mbps vs 30 Mbps). The average camera records at 30 Mbps.17 Mbps vs 30 Mbps
  • No flash
    Pentax 645Z does not have a built-in flash, the average camera does. 73.4% of cameras have a flash.
    What it is: Indicates the presence of an integrated light source to illuminate subjects in low-light conditions.
    When it matters: When you need a quick built-in light for fill flash or simple low-light shots.

    Importance: LOW

    Pentax 645Z does not have a built-in flash, the average camera does. 73.4% of cameras have a flash.
Total
Overall
Display & Design
Photo Features
Video & Audio

Graphic comparison of Pentax 645Z and

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Third-party reviews

United Kingdom
amazon
5.0
1 Reviews

(Reviews last updated: July 2026)

What customers like about Pentax 645Z?

  • Superb image quality with exceptional resolution (51.4MP) and dynamic range
  • Excellent high ISO performance and low-light capabilities
  • Highly durable 'tank-like' build quality with extensive weather sealing (76 seals)
  • Ergonomic handling with a deep, comfortable grip and intuitive physical dials
  • Versatile tilting 3.2-inch LCD screen for awkward shooting angles
  • Long-lasting battery life, often cited around 650–1,000 shots per charge
  • Relatively affordable entry point into the digital medium format ecosystem

What customers dislike about Pentax 645Z?

  • Significant size and weight (approx. 1550g body only), making it bulky for travel
  • Slow and limited autofocus system with focus points clustered in the center
  • Outdated video capabilities with lacking codecs and rolling shutter issues
  • Slow flash sync speed (limited to 1/125 sec)
  • Larger mirror slap can make hand-holding difficult at slower shutter speeds
  • No in-body image stabilization (IBIS)
  • Aging system with limited ongoing manufacturer support or firmware updates

Expert reviews

P
photographylife.com
11/04/2020
Pentax 645Z Review - Photography Life

The Photography Life review of the Pentax 645Z highlights the camera’s exceptional build quality, praising the robust magnesium alloy shell and 76 weather seals that proved durable in harsh conditions. Despite being subjected to a drop and extreme temperatures in Death Valley, the camera functioned flawlessly, making it a standout option for professional, rugged outdoor use....Read more

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fstoppers.com
21/10/2014
Pentax 645z Medium Format Digital Camera Review - Fstoppers

The Pentax 645z is evaluated as a game-changing, "somewhat-affordable" medium format digital camera system priced under $10,000 that performs similarly to an oversized DSLR. Built around a 51-megapixel Sony CMOS sensor, the camera excels at delivering massive raw files with incredible color detail, exceptional shadow recovery, and highly impressive dynamic range. Unlike older CCD...Read more

R
rangefinderonline.com
19/05/2016
Hands-On Camera Review: The Pentax 645Z | Rangefinder

The Pentax 645Z review highlights it as a highly capable, weather-sealed digital medium-format camera that significantly improves upon its predecessor, the 645D. It is heavily praised for its outstanding image quality powered by a 51-megapixel CMOS sensor, offering crisp details, beautiful skin tones, and an impressive dynamic range. Key pros include its relatively affordable price...Read more

D
dxomark.com
14/11/2017
Pentax 645Z: A great choice for medium-format shooters - DXOMARK

The Pentax 645Z is a medium-format DSLR equipped with a 51.4-megapixel CMOS sensor (43.8 x 32.8mm) that lacks an optical low-pass filter, delivering exceptionally detailed, low-noise images with smooth tonal gradations. Tested by DxOMark, it achieved an outstanding overall score of 101 points, making it the second-highest-scoring sensor at the time of its review, trailing only the...Read more

D
dylanmhowell.com
17/10/2014
Pentax 645z Review | Portrait + Wedding Examples

The Dylan M. Howell review identifies the Pentax 645Z as a transformative tool for commercial and portrait photography, highlighting its spectacular 51-megapixel resolution and impressive low-light performance with minimal noise up to ISO 25,600. Key advantages include an accurate 27-point autofocus system, exceptional battery life, and an articulating screen that simplifies...Read more

D
dpreview.com
15/04/2014
Hands on with the Pentax 645Z - DPReview

The Pentax 645Z is a durable, weather-sealed, 51.4-megapixel medium-format camera designed for serious field use, featuring a deep grip for improved ergonomics and a capable 3 fps burst mode. Key advantages include its extensive 76-seal construction for harsh environments and compatibility with optional FluCard technology for wireless functionality. Conversely, the camera is quite...Read more

L
luminous-landscape.com
05/09/2014
Pentax 645Z First Impressions Review - Luminous Landscape

The Pentax 645Z is a medium-format digital camera built around a 51.4-megapixel Sony CMOS sensor that delivers superb image quality and unmatched high ISO noise performance for its class. A major strength of the camera is its highly functional and rugged design, which features extensive dedicated external controls, a bright optical viewfinder, a versatile articulated 3.2-inch LCD...Read more

P
popphoto.com
25/09/2014
Camera Test: Pentax 645Z Review - Popular Photography

The Pentax 645Z is a game-changing medium-format DSLR that bridges the gap between full-frame and medium-format systems by offering an affordable street price of $8,497 (body only) and a familiar 35mm-style control layout. Its massive 44x33mm, 51.4-megapixel Sony CMOS sensor delivers exceptional image resolution, scoring an impressive 4,425 lines per picture height at ISO 100 with...Read more

D
dpreview.com
09/12/2014
Medium well done: Two takes on the Pentax 645Z - DPReview

The DPReview article "Medium well done: Two takes on the Pentax 645Z" highlights the 51.4-megapixel camera's outstanding image quality, high-ISO performance, and user-friendly DSLR-like handling, which makes it surprisingly practical for fieldwork. However, professional reviewers note significant drawbacks, including a slow 1/125s flash sync speed and a massive, heavy footprint that...Read more

P
photigy.com
19/01/2015
Pentax 645Z Review by the Eye of a Jewelry Photographer

The Photigy review of the Pentax 645Z highlights the medium-format camera's suitability for high-end studio work, praising its robust, DSLR-like handling and high-contrast tilting LCD screen. It offers exceptional 14-bit native DNG file output with a class-leading dynamic range, allowing for flawless shadow recovery with minimal noise. Photigy Key drawbacks for jewelry photography...Read more

S
shutterbug.com
24/03/2015
Pentax 645Z Medium Format Camera Review | Shutterbug

The Shutterbug review of the Pentax 645Z highlights the medium-format camera’s exceptional still image quality, driven by its 51.4MP CMOS sensor and wide 12.3 f/stops of dynamic range. Ideal for studio and landscape work, the camera offers accurate color reproduction and impressive, high-contrast, low-noise imagery. Conversely, the review identifies significant weaknesses in video...Read more

M
medium.com
07/01/2021
Pentax 645Z: The 5 Year Digital Medium Format Review DPReview

The Pentax 645Z 51.5MP digital medium format DSLR is reviewed as a durable, "built-like-a-tank" workhorse that offers superior image quality and a distinct medium format aesthetic. Key advantages include its detailed 51.5MP sensor, robust weather sealing, an articulating 3.2-inch LCD, and high-speed USB 3.0 for tethering. Medium · Conversely, the 3.4-pound camera is described as a...Read more

C
chip.de
24/07/2014
Pentax 645Z (Pro Professional DSLR) Review

The Pentax 645Z is an exceptional medium-format professional DSLR that stands out for delivering some of the highest image quality in its class, thanks to its massive 50-megapixel CMOS sensor. This advanced sensor is 2.5 times larger than a standard full-frame chip and marks a revolutionary shift from traditional CCD technology, resulting in razor-sharp, low-noise photographs...Read more

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digitalkamera.de
11/01/2017
Image quality test of the 50-megapixel medium format DSLR Pentax 645Z

The digitalkamera.de review highlights the Pentax 645Z as an affordable, 50-megapixel medium-format DSLR that delivers exceptional resolution, natural tonality, and high-quality image performance. While praised for its superior image quality compared to top-tier full-frame cameras, the system's drawbacks include significant edge sharpness falloff with the 55mm lens and a less...Read more

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S
stilpirat.de
13/10/2014
My two weeks with the Pentax 645z", "Two weeks with the Pentax 645z

The Pentax 645Z review praises the camera for delivering outstanding, professional-grade results with an exceptionally efficient workflow. A primary standout feature is its 50-megapixel resolution and incredible 13-stop dynamic range, which leaves enormous leeway for rescuing shadow and highlight details. Its out-of-camera image rendering—especially the creamy color palette and...Read more

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N
neunzehn72.de
31/07/2014
The Pentax 645z in my hands

The Pentax 645z is a medium-format camera that delivers outstanding, extremely clean image quality with incredible detail and high dynamic range from its 50-megapixel Sony sensor. It features an intuitive, DSLR-like handling system that allows photographers transitioning from smaller formats to operate it without a steep learning curve. Additional benefits include a smooth, creamy...Read more

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S
spiegelberg.org
21/07/2014
Pentax 645Z: A Review", "Pentax 645Z: An In-Depth Look", "Pentax 645Z: The Overview

The Pentax 645Z is a robust digital medium-format camera that offers a highly accessible DSLR-like handling experience at a competitive body price of around €8,000, positioned to compete with professional full-frame bodies like the Nikon D4s and Canon EOS-1D X. It is equipped with a high-performing Sony 51.4-megapixel CMOS sensor—the same sensor utilised by significantly more...Read more

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fotocultmagazin.com
23/07/2026
Pentax 645z - PHOTO CULT MAGAZINE

The Pentax 645Z medium-format camera offers a highly positive user experience, blending the exceptional image quality of medium-format with the intuitive handling of a standard DSLR camera. The author notes that the camera is a relative "bargain" compared to competitors in its class while delivering incredible image quality and significant enlargement potential for large prints via...Read more

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L
lesnumeriques.com
15/04/2014
Pentax 645Z Medium Format DSLR Review", "Pentax 645Z Medium Format Camera Test

The Pentax 645Z is a robust, weather-sealed medium-format DSLR equipped with a 51-megapixel Sony CMOS sensor (43.8 x 32.8 mm) that delivers exceptional image quality with impressive fine detail, smooth bokeh transitions, and excellent electronic noise management up to ISO 6400. Designed with a highly ergonomic, reflex-style interface, the camera features an intuitive layout, an...Read more

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L
lesnumeriques.com
23/09/2014
Full review of the Pentax 645Z by Les Numériques

The review by Renaud Labracherie on Les Numériques highlights the Pentax 645Z as an unconventional medium-format DSLR bridging the gap between standard 24x36 full-frame cameras and traditional studio-bound medium formats. Launched at an aggressive price point of €7,990, the camera acts as a versatile field option built to withstand outdoor shooting while breaking pricing barriers in...Read more

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photoetmac.com
23/06/2015
Pentax 645Z Field Test: Heavy Duty and Exceptionally Rare

The Pentax 645Z is a 51.4-megapixel medium-format DSLR that bridges the gap between traditional studio equipment and the portability of standard DSLRs. Priced much lower than competing Hasselblad or PhaseOne systems, it features a weather-sealed magnesium-alloy body, a deeply comfortable grip, and a highly intuitive interface that will immediately feel familiar to full-frame DSLR...Read more

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photoklub.com
13/07/2015
[Review] Pentax 645Z

The Pentax 645Z is a massive, highly ergonomic medium-format camera featuring a 51.4-megapixel CMOS sensor that produces remarkably detailed images with a signature dense colour rendering. Originally released in June 2014 as a successor to the 645D, it bridges the gap between medium-format quality and DSLR familiarity, feeling very much like a larger version of Pentax's K-3. Built...Read more

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thewside.com
31/08/2014
Pentax 645Z: A great option for photojournalists

This review outlines the Pentax 645Z, positioning it as a highly disruptive medium-format digital camera tailored for photojournalists due to its unmatched price-to-quality ratio. Priced at a very competitive €7,999 for the body, it directly challenges vastly more expensive traditional systems like Hasselblad or Phase One. The author highlights several major pros, including a...Read more

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fotografiastore.it
08/05/2024
Pentax 645Z Review

Based on the laboratory test details from the Fotografia Store overview by the Centro Studi Progresso Fotografico, the Pentax 645Z is celebrated for bridging the gap between digital photography and the nostalgic rendering of traditional roll-film medium format. Originally introduced in 2014, this camera centers around a massive 51-megapixel medium format sensor that delivers...Read more

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photofacts.nl
03/12/2014
Pentax 645Z Review - Photofacts

The Pentax 645Z is an impressive medium-format camera that delivers exceptional image quality, extreme fine detail, and sharp imagery thanks to its 51-megapixel CMOS sensor. Reviewer Elja Trum highlights that the Sony-built sensor provides a massive dynamic range, offering up to five usable stops of exposure adjustment in Lightroom, which allows photographers to rescue heavily...Read more

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