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Panasonic Leica DG Summilux 25mm F 1 4 II ASPH Review | 54 Data compared

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  • Avg. price in UK: ~£520
  • Avg. price in US: ~$700
  • Lens mount: Micro Four Thirds
  • Maximum focal length: 25 mm
  • Maximum aperture (telephoto end): 1.4
  • Optical image stabilization: no
  • Maximum angle of view: 47 °

Panasonic Leica DG Summilux 25mm F 1 4 II ASPH review. Compare 54 technical specifications and user reviews to see how it ranks among camera lenses and if it is worth buying.

7.2

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%

7.2

Technical Score

20.0%

7.2

User score

Very good
7.2

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%

8.1

Optics & Aperture

24.0%

8.7

Build & Handling

20.0%

5.6

Focus & Controls

10.0%

7.9

Lab Scores

8.0%

4.2

Stabilization

3.0%

1.0

Mount & Format

Very good
7.2

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%

8.6

User reviews

30.0%

4.0

Popularity

User score:
United Kingdom
amazon
4.3
(59)
United States
Amazon_logo.png
4.3
(60)

(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

  • 7.6
    Travel

    Score components:

    30.0%

    9.2

    Lens length

    25.0%

    8.7

    Lens diameter

    25.0%

    10

    Weather sealing (splashproof)

    20.0%

    1.0

    Optical image stabilization

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All: ranking among all products in the database.

Verdict

The Panasonic Leica DG Summilux 25mm f/1.4 II ASPH is a premium normal-length prime lens for Micro Four Thirds cameras, providing a 50mm equivalent focal length ideal for portraits and street photography. Its optical design consists of 9 elements in 7 groups, featuring two aspherical elements and one Ultra-High Refractive Index (UHR) element to minimize aberrations, alongside a Nano Surface Coating to reduce flare and ghosting. This Mark II version introduces a rugged dust- and splash-resistant construction and a high-speed 240-fps stepping autofocus motor for quick, silent operation. Main pros include its bright f/1.4 aperture for excellent low-light performance, superb bokeh quality, and improved weather sealing. However, cons include the lack of built-in optical image stabilization, some noticeable chromatic aberration (purple fringing) at wide apertures, and a lens hood design that cannot be reverse-mounted.

Technical Specifications of Panasonic Leica DG Summilux 25mm F 1 4 II ASPH

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%

8.1

Optics & Aperture

24.0%

8.7

Build & Handling

20.0%

5.6

Focus & Controls

10.0%

7.9

Lab Scores

8.0%

4.2

Stabilization

3.0%

1.0

Mount & Format

7.2
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a technical score of 7.19 points, which is higher than 52% 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%

8.6

User reviews

30.0%

4.0

Popularity

User score:
United Kingdom
amazon
4.3
(59)
United States
Amazon_logo.png
4.3
(60)

(Reviews last updated: July 2026)

7.2
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a user score of 7.23 points, which is lower than 82% 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.
4.0
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a popularity of 4 points, which is lower than 65.6% 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%

7.2

Overall score

40.0%

7.8

Price

7.4
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH 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

Micro Four Thirds
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

Micro Four Thirds
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

46 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
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH does not support teleconverters. 15.3% of camera lenses support teleconverters.
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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

25 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

25 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

47 °
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

47 °
Show more
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

STM
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

0.3 m
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH focuses as close as 0.3 m, which is closer than 48.3% of camera lenses and equal to 7.9% 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

0.11x
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH reaches a reproduction ratio of 0.11x, which is lower than 86.7% of camera lenses and equal to 3.7% 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

yes
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH supports full-time manual focus. 68.3% of camera lenses support full-time manual focus.
Override via AF+MF setting.
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
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH 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
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH 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

335 g
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH weighs 335 g, which is lighter than 73.9% of camera lenses and equal to the weight of 0.4% 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

54.5 mm
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is 54.5 mm long, which is shorter than 85.2% 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

63 mm
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a diameter of 63 mm, which is slimmer than 87.2% of camera lenses and equal to that of 2.2% 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

yes
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH supports weather sealing. 50.2% 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
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH uses a metal lens mount. 93.1% of camera lenses use a metal lens mount.
Show more
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

13
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a DxOMark sharpness score of 13, which is lower than that of 58.1% of camera lenses and equal to that of 2.2% of camera lenses.
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

1.8 T-stop
Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a DxOMark transmission of 1.8 T-stop, which is lower than that of 80.1% of camera lenses and equal to that of 5.1% of camera lenses.
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

?
Show more

Panasonic Leica DG Summilux 25mm F 1 4 II ASPH vs the average camera lens

  • 1.4 lower f-number at telephoto end
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH 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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH 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
  • 37.5 mm shorter lens
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is shorter than the average camera lens (54.5 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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is shorter than the average camera lens (54.5 mm vs 92 mm). The average lens has a length of 92 mm.54.5 mm vs 92 mm
  • 190.4 g lighter
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is lighter than the average camera lens (335 g vs 525.4 g). The average lens weighs 525.4 g.
    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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is lighter than the average camera lens (335 g vs 525.4 g). The average lens weighs 525.4 g.335 g vs 525.4 g
  • 1.3 T-stop lower transmission value
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower T-stop value than the average camera lens (1.8 T-stop vs 3.1 T-stop). The average lens has a T-stop value of 3.1 T-stop.
    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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower T-stop value than the average camera lens (1.8 T-stop vs 3.1 T-stop). The average lens has a T-stop value of 3.1 T-stop.1.8 T-stop vs 3.1 T-stop
  • 14 mm narrower lens barrel
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is slimmer than the average camera lens (63 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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is slimmer than the average camera lens (63 mm vs 77 mm). The average lens has a diameter of 77 mm.63 mm vs 77 mm
  • Newer release date
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH was released more recently 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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH was released more recently than the average camera lens.2019 vs 2016
  • 1.4 lower f-number at telephoto end
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH 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.
  • 37.5 mm shorter lens
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is shorter than the average camera lens (54.5 mm vs 92 mm). The average lens has a length of 92 mm.
  • 190.4 g lighter
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is lighter than the average camera lens (335 g vs 525.4 g). The average lens weighs 525.4 g.
  • 14 mm narrower lens barrel
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is slimmer than the average camera lens (63 mm vs 77 mm). The average lens has a diameter of 77 mm.
  • Newer release date
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH was released more recently than the average camera lens.
  • 1.3 T-stop lower transmission value
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower T-stop value than the average camera lens (1.8 T-stop vs 3.1 T-stop). The average lens has a T-stop value of 3.1 T-stop.

Total
Optics & Aperture
Build & Handling
Lab Scores
  • 2 fewer aperture blades
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has fewer aperture blades than the average camera lens (7 vs 9). The average lens has 9 aperture blades.
  • 2 fewer low-dispersion elements
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has fewer low-dispersion elements than the average camera lens (0 vs 2). The average lens has 2 low-dispersion elements.
  • 0.08 x lower maximum reproduction ratio
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower maximum reproduction ratio than the average camera lens (0.1x vs 0.192x). The average lens has a maximum reproduction ratio of 0.192x.
  • 3 points lower DxOMark sharpness
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower DxOMark sharpness score than the average camera lens (13 vs 16). The average lens has a DxOMark sharpness score of 16.
  • 2 fewer aperture blades
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has fewer aperture blades than the average camera lens (7 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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has fewer aperture blades than the average camera lens (7 vs 9). The average lens has 9 aperture blades.7 vs 9
  • 2 fewer low-dispersion elements
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH 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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has fewer low-dispersion elements than the average camera lens (0 vs 2). The average lens has 2 low-dispersion elements.0 vs 2
  • 0.08 x lower maximum reproduction ratio
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower maximum reproduction ratio than the average camera lens (0.1x 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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower maximum reproduction ratio than the average camera lens (0.1x vs 0.192x). The average lens has a maximum reproduction ratio of 0.192x.0.11 x vs 0.192 x
  • 3 points lower DxOMark sharpness
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower DxOMark sharpness score than the average camera lens (13 vs 16). The average lens has a DxOMark sharpness score of 16.
    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

    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower DxOMark sharpness score than the average camera lens (13 vs 16). The average lens has a DxOMark sharpness score of 16.13 vs 16
  • 11.9% lower user score
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower user score than the average camera lens (7.23 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.
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH has a lower user score than the average camera lens (7.23 vs 8.091).7.23 vs 8.09
  • 58.2% less popular
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is less popular than the average camera lens (4.04 vs 6.383).
    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.
    Panasonic Leica DG Summilux 25mm F 1 4 II ASPH is less popular than the average camera lens (4.04 vs 6.383).4.04 vs 6.38
Total
Overall
Optics & Aperture
Focus & Controls
Lab Scores

Graphic comparison of Panasonic Leica DG Summilux 25mm F 1 4 II ASPH and

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Third-party reviews

United Kingdom
amazon
4.3
59 Reviews
United States
Amazon_logo.png
4.3
60 Reviews

(Reviews last updated: July 2026)

What customers like about Panasonic Leica DG Summilux 25mm F 1 4 II ASPH?

  • Exceptional image quality with rich color rendering and high contrast
  • Fast f/1.4 aperture provides excellent low-light performance and shallow depth of field
  • Sharpness is impressive, especially when stopped down slightly to f/2
  • Compact and lightweight design, making it highly portable for travel and street photography
  • Improved Mark II features include dust- and splash-resistant weather sealing
  • Quick and nearly silent autofocus performance suitable for both stills and video
  • Smooth and 'creamy' bokeh rendering

What customers dislike about Panasonic Leica DG Summilux 25mm F 1 4 II ASPH?

  • Noticeable chromatic aberration and purple fringing in high-contrast or backlit scenes
  • Softness at the edges of the frame when used wide open at f/1.4
  • Aperture blades can produce a 'rattlesnake' clicking noise on some camera bodies
  • Included lens hood is large, non-reversible, and cumbersome for storage
  • Lacks internal optical image stabilization
  • Higher price point compared to other 25mm Micro Four Thirds alternatives

Expert reviews

P
photographylife.com
09/11/2025
Summary of the review
The Best Micro Four Thirds Lenses: 11 of My Favorites (Includes technical evaluation of II version)
D
digitalkamera.de
23/08/2021
Summary of the review
Review: Panasonic Leica DG Summilux 25 mm 1.4 II Asph. tested
(Translated)Show original
L
lesnumeriques.com
06/05/2020
Summary of the review
Panasonic Leica DG Summilux 25mm f/1.4 ASPH II Review
(Translated)Show original
F
focus-review.com
20/11/2014
Summary of the review
Review of the Panasonic Leica DG Summilux 25mm f/1.4 ASPH Lens
(Translated)Show original

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Sigma 35mm F 2 DG DN

Camera lenses

7.3
sigma-23mm-f-1-4-dc-dn-c
Sigma 23mm F 1 4 DC DN C

Camera lenses

7.7

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