Samyang 50mm F 1 4 AS UMC Review | 54 Data compared

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  • Avg. price in UK: ~£290
  • Avg. price in US: ~$400
  • Lens mount: Canon EF, Nikon F, Fujifilm X, Sony A, Sony E, Micro Four Thirds, Pentax K, Samsung NX
  • Maximum focal length: 50 mm
  • Maximum aperture (telephoto end): 1.4
  • Optical image stabilization: no
  • Maximum angle of view: 46.2 °

Samyang 50mm F 1 4 AS UMC review. Compare 54 technical specifications and user reviews to see how it ranks among camera lenses and if it is worth buying.

6.8

Overall score

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

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

Score components:

80.0%

6.7

Technical Score

20.0%

7.0

User score

Good
6.7

Technical Score

What it is: An assessment of the camera lens's technical performance, covering eight key areas: sharpness, aperture flexibility, autofocus, stabilization, build quality, mount compatibility, close-focus performance, and design.

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

Score components:

35.0%

8.2

Optics & Aperture

24.0%

6.3

Build & Handling

20.0%

5.4

Focus & Controls

10.0%

9.0

Lab Scores

8.0%

4.2

Stabilization

3.0%

1.0

Mount & Format

Good
7.0

User score

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

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

Score components:

70.0%

8.2

User reviews

30.0%

4.1

Popularity

User score:
United Kingdom
amazon
4.1
(47)
amazon
4.3
(14)
United States
Amazon_logo.png
4.3
(45)
Amazon_logo.png
4.9
(10)
Amazon_logo.png
1.0
(1)

(Reviews last updated: July 2026)

Very good
  • 7.3
    Low-light photography

    Score components:

    70.0%

    10

    Maximum aperture (telephoto end)

    30.0%

    1.0

    Optical image stabilization

  • 4.9
    Travel

    Score components:

    30.0%

    8.9

    Lens length

    25.0%

    7.3

    Lens diameter

    25.0%

    1.0

    Weather sealing (splashproof)

    20.0%

    1.0

    Optical image stabilization

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Best prices in UK

Best rankings

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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 Samyang 50mm f/1.4 AS UMC is a fast, manual-focus standard prime lens designed for full-frame sensors, featuring an optical construction of 9 elements in 6 groups, including one aspherical and one hybrid aspherical element to minimize aberrations. Key specifications include a bright f/1.4 maximum aperture, an 8-blade circular diaphragm for smooth bokeh, a 77mm filter thread, and a minimum focusing distance of 0.45m. Its main strengths are its solid aluminum alloy build, high center sharpness when stopped down, and excellent low-light performance. However, notable drawbacks include the lack of autofocus and electronic communication with the camera, significant vignetting and softer corner resolution at f/1.4, and a relatively large physical size compared to similar primes.

Technical Specifications of Samyang 50mm F 1 4 AS UMC

Technical Score

What it is: An assessment of the camera lens's technical performance, covering eight key areas: sharpness, aperture flexibility, autofocus, stabilization, build quality, mount compatibility, close-focus performance, and design.

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

Score components:

35.0%

8.2

Optics & Aperture

24.0%

6.3

Build & Handling

20.0%

5.4

Focus & Controls

10.0%

9.0

Lab Scores

8.0%

4.2

Stabilization

3.0%

1.0

Mount & Format

6.7
Samyang 50mm F 1 4 AS UMC has a technical score of 6.73 points, which is lower than 69.3% of camera lenses.
User score

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

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

Score components:

70.0%

8.2

User reviews

30.0%

4.1

Popularity

User score:
United Kingdom
amazon
4.1
(47)
amazon
4.3
(14)
United States
Amazon_logo.png
4.3
(45)
Amazon_logo.png
4.9
(10)
Amazon_logo.png
1.0
(1)

(Reviews last updated: July 2026)

7.0
Samyang 50mm F 1 4 AS UMC has a user score of 6.96 points, which is lower than 87.7% of camera lenses.
Popularity
What it is: An indicator based on the number of reviews received by the camera lens.
When it matters: When you want to see which camera lenses attract the most buyer attention and review activity.
4.1
Samyang 50mm F 1 4 AS UMC has a popularity of 4.1 points, which is lower than 64.3% of products in this category.
Ratio quality/price

What it is: An indicator that combines the camera lens'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%

6.8

Overall score

40.0%

9.0

Price

7.4
Samyang 50mm F 1 4 AS UMC has a quality-to-price ratio of 7.4 points, which is higher than 50.6% of products in this category.
Lens type
What it is: The optical category that indicates whether the lens is a prime, zoom, macro, fisheye, or another design.
When it matters: When you are choosing between a prime, zoom, macro, or specialty lens for the kind of subjects you shoot.

Importance: LOW

prime
Lens mount
What it is: The mechanical and electronic interface that determines which cameras the lens can be attached to.
When it matters: When camera compatibility and access to the right lens ecosystem are central to your buying decision.

Importance: LOW

Canon EF, Nikon F, Fujifilm X, Sony A, Sony E, Micro Four Thirds, Pentax K, Samsung NX
Sensor format coverage
What it is: The largest sensor size the lens is designed to cover without severe vignetting.
When it matters: When you need the lens to fully cover your camera sensor without heavy corner darkening.

Importance: LOW

Full-frame
Filter thread size
What it is: The diameter of the front filter thread used for screw-in filters and compatible accessories.
When it matters: When you plan to use screw-in filters such as polarizers, ND filters, or protective glass.

Importance: LOW

77 mm
Teleconverter compatibility
What it is: Whether the lens can be used with compatible teleconverters to extend focal length.
When it matters: When you want to extend reach for wildlife or sports without changing to a different long lens.

Importance: HIGH

no
Samyang 50mm F 1 4 AS UMC does not support teleconverters. 15.3% of camera lenses support teleconverters.
Only unofficial third-party options are mentioned.
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Minimum focal length
What it is: The shortest focal length the lens can provide, which determines its widest framing.
When it matters: When wide framing matters for landscapes, interiors, architecture, or travel shots.

Importance: LOW

50 mm
Maximum focal length
What it is: The longest focal length the lens can reach, which determines its telephoto reach.
When it matters: When you need more reach for wildlife, sports, stage events, or distant details.

Importance: LOW

50 mm
Optical zoom
What it is: The ratio between the longest and shortest focal lengths available in the lens zoom range.
When it matters: When you want one lens to cover a broader range of compositions without swapping glass.

Importance: LOW

?
Maximum angle of view
What it is: The widest scene the lens can capture at its shortest focal length.
When it matters: When you need to fit more of a room, skyline, or landscape into the frame.

Importance: LOW

46.2 °
Minimum angle of view
What it is: The narrowest scene the lens captures at its longest focal length.
When it matters: When you want tighter framing on faraway subjects without moving closer.

Importance: LOW

46.2 °
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Focus motor
What it is: The autofocus drive system responsible for moving lens elements into focus.
When it matters: When fast, quiet autofocus matters for video, wildlife, street shots, or moving subjects.

Importance: LOW

N/A
Minimum focus distance
What it is: The shortest distance at which the lens can focus on a subject.
When it matters: When you like shooting details, food, flowers, or products from a very short distance.

Importance: MEDIUM

0.45 m
Samyang 50mm F 1 4 AS UMC focuses as close as 0.45 m, which is farther than 63.6% of camera lenses and equal to 5.4% of camera lenses.
Maximum reproduction ratio
What it is: The highest magnification the lens can achieve when focusing at its closest distance.
When it matters: When close-up magnification matters for macro work, textures, or small product details.

Importance: MEDIUM

0.714x
Samyang 50mm F 1 4 AS UMC reaches a reproduction ratio of 0.714x, which is higher than 94.4% of camera lenses and equal to 0.1% of camera lenses.
Full-time manual focus
What it is: The ability to adjust focus manually without leaving autofocus mode.
When it matters: When you want to fine-tune focus instantly without switching out of autofocus.

Importance: HIGH

no
Samyang 50mm F 1 4 AS UMC does not support full-time manual focus. 68.4% of camera lenses support full-time manual focus.
Internal focusing
What it is: A focusing design in which internal elements move while the outer barrel length stays unchanged.
When it matters: When you use polarizers, gimbals, or close-up setups that benefit from a lens that does not extend while focusing.

Importance: HIGH

yes
Samyang 50mm F 1 4 AS UMC supports internal focusing. 83.6% of camera lenses support internal focusing.
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Optical image stabilization
What it is: A hardware system that shifts optical elements to counteract camera shake and reduce blur.
When it matters: When you want steadier handheld shots and less blur, especially in low light or at longer focal lengths.

Importance: HIGH

no
Samyang 50mm F 1 4 AS UMC does not support optical image stabilization. 29% of camera lenses include optical image stabilization.
Stabilization effectiveness (CIPA stops)
What it is: The rated stabilizer benefit, measured in stops, under CIPA testing standards.
When it matters: When you are comparing stabilized lenses and want to know how much handheld shutter-speed advantage they offer.

Importance: HIGH

?
Weight
What it is: The total mass of the lens, affecting portability and handling balance on the camera body.
When it matters: When you carry a lens all day for travel, hiking, or event coverage and want to keep your kit manageable.

Importance: HIGH

535 g
Samyang 50mm F 1 4 AS UMC weighs 535 g, which is heavier than 50.8% of camera lenses and equal to the weight of 0.5% of camera lenses.
Lens length
What it is: The physical length of the lens body from mount to front edge.
When it matters: When bag space, balance, or front clearance matters in a compact travel or video setup.

Importance: HIGH

74.7 mm
Samyang 50mm F 1 4 AS UMC is 74.7 mm long, which is shorter than 68.3% of camera lenses and equal to the length of 0.6% of camera lenses.
Lens diameter
What it is: The widest outer diameter of the lens barrel.
When it matters: When grip comfort, filter size, or fit inside a tight camera bag matters to you.

Importance: MEDIUM

81.6 mm
Samyang 50mm F 1 4 AS UMC has a diameter of 81.6 mm, which is wider than 61.2% of camera lenses and equal to that of 0.4% of camera lenses.
Weather sealing (splashproof)
What it is: Protective sealing intended to resist splashes, dust, and light environmental exposure.
When it matters: When you often shoot outdoors in light rain, dust, or changing conditions.

Importance: HIGH

no
Samyang 50mm F 1 4 AS UMC does not support weather sealing. 50.3% of camera lenses support weather sealing.
Metal mount
What it is: A lens mount made of metal rather than plastic for greater durability at the camera connection point.
When it matters: When durability matters because you change lenses often or use heavier gear for work.

Importance: HIGH

yes
Samyang 50mm F 1 4 AS UMC uses a metal lens mount. 93.1% of camera lenses use a metal lens mount.
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DxOMark overall score
What it is: The combined DxOMark lens rating based on lab-tested optical performance.
When it matters: When you want a quick lab-based summary of overall optical performance before comparing lenses in detail.

Importance: HIGH

?
DxOMark sharpness score
What it is: The DxOMark subscore that reflects how much detail the lens can resolve across the frame.
When it matters: When fine detail matters for landscapes, product work, or high-resolution cameras.

Importance: HIGH

?
DxOMark transmission
What it is: The measured light transmission of the lens, expressed as T-stop rather than nominal f-number.
When it matters: When real light loss matters for exposure consistency in studio, cinema, or mixed-lens shoots.

Importance: MEDIUM

?
DxOMark distortion
What it is: The DxOMark metric that measures how much the lens bends straight lines away from their true shape.
When it matters: When straight lines matter in architecture, interiors, copy work, or product photography.

Importance: MEDIUM

?
DxOMark vignetting
What it is: The DxOMark measurement of corner darkening relative to the center of the image.
When it matters: When even corner brightness matters for skies, studio backdrops, or clean product shots.

Importance: MEDIUM

?
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Samyang 50mm F 1 4 AS UMC vs the average camera lens

  • 1.4 lower f-number at telephoto end
    Samyang 50mm F 1 4 AS UMC has a brighter maximum telephoto aperture than the average camera lens (f/1.4 vs f/2.8). The average lens has a maximum telephoto aperture of f/2.8.
    What it is: The widest aperture available at the long end of the zoom range, affecting light intake and background blur.
    When it matters: When you shoot at the long end in low light or want stronger background blur for portraits and sports.

    Importance: HIGH

    Samyang 50mm F 1 4 AS UMC has a brighter maximum telephoto aperture than the average camera lens (f/1.4 vs f/2.8). The average lens has a maximum telephoto aperture of f/2.8.1.4 vs 2.8
  • Has aperture ring
    Samyang 50mm F 1 4 AS UMC has an aperture ring, the average camera lens does not. 31.2% of camera lenses include an aperture ring.
    What it is: A dedicated ring on the lens used to control the aperture directly.
    When it matters: When you want direct tactile control over exposure while shooting photos or video.

    Importance: MEDIUM

    Samyang 50mm F 1 4 AS UMC has an aperture ring, the average camera lens does not. 31.2% of camera lenses include an aperture ring.
  • Has focus distance scale
    Samyang 50mm F 1 4 AS UMC has a focus distance scale, the average camera lens does not. 48.6% of camera lenses include a focus distance scale.
    What it is: A marked scale that shows the approximate focus distance set on the lens.
    When it matters: When you pre-focus manually for street, zone focusing, or repeatable tripod setups.

    Importance: MEDIUM

    Samyang 50mm F 1 4 AS UMC has a focus distance scale, the average camera lens does not. 48.6% of camera lenses include a focus distance scale.
  • 17.3 mm shorter lens
    Samyang 50mm F 1 4 AS UMC is shorter than the average camera lens (74.7 mm vs 92 mm). The average lens has a length of 92 mm.
    What it is: The physical length of the lens body from mount to front edge.
    When it matters: When bag space, balance, or front clearance matters in a compact travel or video setup.

    Importance: HIGH

    Samyang 50mm F 1 4 AS UMC is shorter than the average camera lens (74.7 mm vs 92 mm). The average lens has a length of 92 mm.74.7 mm vs 92 mm
  • 0.52 x higher maximum reproduction ratio
    Samyang 50mm F 1 4 AS UMC has a higher maximum reproduction ratio than the average camera lens (0.7x vs 0.192x). The average lens has a maximum reproduction ratio of 0.192x.
    What it is: The highest magnification the lens can achieve when focusing at its closest distance.
    When it matters: When close-up magnification matters for macro work, textures, or small product details.

    Importance: MEDIUM

    Samyang 50mm F 1 4 AS UMC has a higher maximum reproduction ratio than the average camera lens (0.7x vs 0.192x). The average lens has a maximum reproduction ratio of 0.192x.0.714 x vs 0.192 x
  • 1.4 lower f-number at telephoto end
    Samyang 50mm F 1 4 AS UMC has a brighter maximum telephoto aperture than the average camera lens (f/1.4 vs f/2.8). The average lens has a maximum telephoto aperture of f/2.8.
  • Has aperture ring
    Samyang 50mm F 1 4 AS UMC has an aperture ring, the average camera lens does not. 31.2% of camera lenses include an aperture ring.
  • Has focus distance scale
    Samyang 50mm F 1 4 AS UMC has a focus distance scale, the average camera lens does not. 48.6% of camera lenses include a focus distance scale.
  • 0.52 x higher maximum reproduction ratio
    Samyang 50mm F 1 4 AS UMC has a higher maximum reproduction ratio than the average camera lens (0.7x vs 0.192x). The average lens has a maximum reproduction ratio of 0.192x.
  • 17.3 mm shorter lens
    Samyang 50mm F 1 4 AS UMC is shorter than the average camera lens (74.7 mm vs 92 mm). The average lens has a length of 92 mm.
  • 1 fewer aperture blades
    Samyang 50mm F 1 4 AS UMC has fewer aperture blades than the average camera lens (8 vs 9). The average lens has 9 aperture blades.
  • 2 fewer low-dispersion elements
    Samyang 50mm F 1 4 AS UMC has fewer low-dispersion elements than the average camera lens (0 vs 2). The average lens has 2 low-dispersion elements.
  • No full-time manual focus
    Samyang 50mm F 1 4 AS UMC does not support full-time manual focus, the average camera lens does. 68.4% of camera lenses support full-time manual focus.
  • 0.15 m longer minimum focus distance
    Samyang 50mm F 1 4 AS UMC has a higher minimum focus distance than the average camera lens (0.5 m vs 0.3 m). The average lens has a minimum focus distance of 0.3 m.
  • Not weather-sealed
    Samyang 50mm F 1 4 AS UMC does not support weather sealing, the average camera lens does. 50.3% of camera lenses support weather sealing.
  • 4.6 mm wider lens barrel
    Samyang 50mm F 1 4 AS UMC is wider than the average camera lens (81.6 mm vs 77 mm). The average lens has a diameter of 77 mm.
  • Older release date
    Samyang 50mm F 1 4 AS UMC was released earlier than the average camera lens.
  • Not weather-sealed
    Samyang 50mm F 1 4 AS UMC does not support weather sealing, the average camera lens does. 50.3% of camera lenses support weather sealing.
    What it is: Protective sealing intended to resist splashes, dust, and light environmental exposure.
    When it matters: When you often shoot outdoors in light rain, dust, or changing conditions.

    Importance: HIGH

    Samyang 50mm F 1 4 AS UMC does not support weather sealing, the average camera lens does. 50.3% of camera lenses support weather sealing.
  • No full-time manual focus
    Samyang 50mm F 1 4 AS UMC does not support full-time manual focus, the average camera lens does. 68.4% of camera lenses support full-time manual focus.
    What it is: The ability to adjust focus manually without leaving autofocus mode.
    When it matters: When you want to fine-tune focus instantly without switching out of autofocus.

    Importance: HIGH

    Samyang 50mm F 1 4 AS UMC does not support full-time manual focus, the average camera lens does. 68.4% of camera lenses support full-time manual focus.
  • 1 fewer aperture blades
    Samyang 50mm F 1 4 AS UMC has fewer aperture blades than the average camera lens (8 vs 9). The average lens has 9 aperture blades.
    What it is: The number of diaphragm blades that shape the aperture opening and influence blur rendering.
    When it matters: When the look of out-of-focus highlights matters in portraits, close-ups, or cinematic video.

    Importance: HIGH

    Samyang 50mm F 1 4 AS UMC has fewer aperture blades than the average camera lens (8 vs 9). The average lens has 9 aperture blades.8 vs 9
  • 2 fewer low-dispersion elements
    Samyang 50mm F 1 4 AS UMC has fewer low-dispersion elements than the average camera lens (0 vs 2). The average lens has 2 low-dispersion elements.
    What it is: Optical elements designed to reduce color fringing by controlling how different wavelengths focus.
    When it matters: When you want cleaner edges and less color fringing in high-contrast scenes.

    Importance: MEDIUM

    Samyang 50mm F 1 4 AS UMC has fewer low-dispersion elements than the average camera lens (0 vs 2). The average lens has 2 low-dispersion elements.0 vs 2
  • 0.15 m longer minimum focus distance
    Samyang 50mm F 1 4 AS UMC has a higher minimum focus distance than the average camera lens (0.5 m vs 0.3 m). The average lens has a minimum focus distance of 0.3 m.
    What it is: The shortest distance at which the lens can focus on a subject.
    When it matters: When you like shooting details, food, flowers, or products from a very short distance.

    Importance: MEDIUM

    Samyang 50mm F 1 4 AS UMC has a higher minimum focus distance than the average camera lens (0.5 m vs 0.3 m). The average lens has a minimum focus distance of 0.3 m.0.45 m vs 0.3 m
  • 4.6 mm wider lens barrel
    Samyang 50mm F 1 4 AS UMC is wider than the average camera lens (81.6 mm vs 77 mm). The average lens has a diameter of 77 mm.
    What it is: The widest outer diameter of the lens barrel.
    When it matters: When grip comfort, filter size, or fit inside a tight camera bag matters to you.

    Importance: MEDIUM

    Samyang 50mm F 1 4 AS UMC is wider than the average camera lens (81.6 mm vs 77 mm). The average lens has a diameter of 77 mm.81.6 mm vs 77 mm
  • 16.2% lower user score
    Samyang 50mm F 1 4 AS UMC has a lower user score than the average camera lens (6.96 vs 8.091).
    What it is: A rating that combines user reviews and the total number of reviews received by the camera lens.
    When it matters: When real-world owner satisfaction and review volume matter to your decision.
    Samyang 50mm F 1 4 AS UMC has a lower user score than the average camera lens (6.96 vs 8.091).6.96 vs 8.09
  • Older release date
    Samyang 50mm F 1 4 AS UMC was released earlier than the average camera lens.
    What it is: The date when the lens model was first officially introduced.
    When it matters: When you prefer a newer optical design with more modern autofocus, coatings, or stabilization features.

    Importance: LOW

    Samyang 50mm F 1 4 AS UMC was released earlier than the average camera lens.2014 vs 2016

Graphic comparison of Samyang 50mm F 1 4 AS UMC and

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Third-party reviews

(Reviews last updated: July 2026)

What customers like about Samyang 50mm F 1 4 AS UMC?

  • High center sharpness, especially when stopped down to f/2.8 or further
  • Smooth and well-damped manual focus ring action
  • Excellent control of chromatic aberration and color fringing
  • Solid and high-quality build construction
  • Pleasing, smooth bokeh rendering for portraits
  • Very low image distortion for a 50mm lens

What customers dislike about Samyang 50mm F 1 4 AS UMC?

  • Average sharpness and contrast at the maximum f/1.4 aperture
  • Heavy vignetting (light fall-off) when shooting wide open at f/1.4
  • Poor performance against bright light with noticeable flares and ghosting
  • No electronic communication with the camera, requiring manual aperture and exposure settings
  • Lacks weather sealing and image stabilization
  • Large and heavy compared to standard 50mm f/1.4 lenses from other brands

Expert reviews

E
ephotozine.com
16/10/2014
Summary of the review
L
lenstip.com
03/12/2014
Summary of the review
D
dustinabbott.net
11/03/2015
Summary of the review
C
chip.de
12/12/2016
Summary of the review
F
fotografiarte.es
No date available
Summary of the review
F
fotografiastore.it
27/07/2026
Summary of the review
J
juzaphoto.com
04/01/2017
Summary of the review
F
focus-review.com
10/10/2017
Summary of the review

Video reviews

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