Leica APO Summicron SL 35mm F 2 ASPH Review | 54 Data compared

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  • Avg. price in UK: ~£4,390
  • Avg. price in US: ~$5,600
  • Lens mount: L-Mount
  • Maximum focal length: 35 mm
  • Maximum aperture (telephoto end): 2
  • Optical image stabilization: no
  • Maximum angle of view: 63.4 °

Leica APO Summicron SL 35mm F 2 ASPH review. Compare 54 technical specifications and user reviews to see how it ranks among camera lenses and if it is worth buying.

7.6

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%

7.7

Technical Score

20.0%

7.3

User score

Very good
7.7

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%

8.6

Optics & Aperture

24.0%

9.4

Build & Handling

20.0%

5.6

Focus & Controls

10.0%

9.5

Lab Scores

8.0%

4.2

Stabilization

3.0%

1.0

Mount & Format

Very good
7.3

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%

10

User reviews

30.0%

1.0

Popularity

User score:
United Kingdom
amazon
5.0
(1)
United States
Amazon_logo.png
5.0
(1)

(Reviews last updated: July 2026)

Very good
  • 7.2
    Low-light photography

    Score components:

    70.0%

    9.9

    Maximum aperture (telephoto end)

    30.0%

    1.0

    Optical image stabilization

  • 7.2
    Travel

    Score components:

    30.0%

    8.4

    Lens length

    25.0%

    8.0

    Lens diameter

    25.0%

    10

    Weather sealing (splashproof)

    20.0%

    1.0

    Optical image stabilization

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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 Leica APO-Summicron-SL 35mm f/2 ASPH is a premium wide-angle prime featuring an intricate 13-element optical design, including five aspherical surfaces and anomalous partial dispersion glass for exceptional apochromatic correction. It delivers edge-to-edge sharpness and high contrast even at its f/2 maximum aperture, supported by a Dual Syncro Drive stepping motor for silent, high-speed autofocus and a close-focus distance of 0.27m. While it offers unmatched optical precision, robust weather sealing, and signature 'Leica look' rendering, its primary drawbacks are the significant financial investment required and a relatively large, heavy footprint compared to non-APO 35mm alternatives.

Technical Specifications of Leica APO Summicron SL 35mm F 2 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%

8.6

Optics & Aperture

24.0%

9.4

Build & Handling

20.0%

5.6

Focus & Controls

10.0%

9.5

Lab Scores

8.0%

4.2

Stabilization

3.0%

1.0

Mount & Format

7.7
Leica APO Summicron SL 35mm F 2 ASPH has a technical score of 7.71 points, which is higher than 74.9% 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%

10

User reviews

30.0%

1.0

Popularity

User score:
United Kingdom
amazon
5.0
(1)
United States
Amazon_logo.png
5.0
(1)

(Reviews last updated: July 2026)

7.3
Leica APO Summicron SL 35mm F 2 ASPH has a user score of 7.3 points, which is lower than 79.3% 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.
1.0
Leica APO Summicron SL 35mm F 2 ASPH has a popularity of 1 points, which is lower than 90% 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%

7.6

Overall score

40.0%

1.0

Price

5.6
Leica APO Summicron SL 35mm F 2 ASPH has a quality-to-price ratio of 5.6 points, which is lower than 94% 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

L-Mount
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

67 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
Leica APO Summicron SL 35mm F 2 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

35 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

35 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

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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

63.4 °
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

63.4 °
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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

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

0.27 m
Leica APO Summicron SL 35mm F 2 ASPH focuses as close as 0.27 m, which is closer than 63.8% of camera lenses and equal to 0.7% 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

0.2x
Leica APO Summicron SL 35mm F 2 ASPH reaches a reproduction ratio of 0.2x, which is higher than 50.8% of camera lenses and equal to 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
Leica APO Summicron SL 35mm F 2 ASPH supports full-time manual focus. 68.3% 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
Leica APO Summicron SL 35mm F 2 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
Leica APO Summicron SL 35mm F 2 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

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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

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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

102 mm
Leica APO Summicron SL 35mm F 2 ASPH is 102 mm long, which is longer than 61.4% of camera lenses and equal to the length of 0.7% 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

73 mm
Leica APO Summicron SL 35mm F 2 ASPH has a diameter of 73 mm, which is slimmer than 62.3% of camera lenses and equal to that of 3% 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
Leica APO Summicron SL 35mm F 2 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
Leica APO Summicron SL 35mm F 2 ASPH 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

39
Leica APO Summicron SL 35mm F 2 ASPH has a DxOMark overall score of 39, which is higher than that of 84.3% of camera lenses and equal to that of 4.6% of camera lenses.
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

32
Leica APO Summicron SL 35mm F 2 ASPH has a DxOMark sharpness score of 32, which is higher than that of 81.7% of camera lenses and equal to that of 0.5% 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

2.0 T-stop
Leica APO Summicron SL 35mm F 2 ASPH has a DxOMark transmission of 2.0 T-stop, which is lower than that of 69.9% of camera lenses and equal to that of 5.9% 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

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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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Leica APO Summicron SL 35mm F 2 ASPH vs the average camera lens

  • 0.8 lower f-number at telephoto end
    Leica APO Summicron SL 35mm F 2 ASPH has a brighter maximum telephoto aperture than the average camera lens (f/2 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

    Leica APO Summicron SL 35mm F 2 ASPH has a brighter maximum telephoto aperture than the average camera lens (f/2 vs f/2.8). The average lens has a maximum telephoto aperture of f/2.8.2 vs 2.8
  • 7 more low-dispersion elements
    Leica APO Summicron SL 35mm F 2 ASPH has more low-dispersion elements than the average camera lens (9 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

    Leica APO Summicron SL 35mm F 2 ASPH has more low-dispersion elements than the average camera lens (9 vs 2). The average lens has 2 low-dispersion elements.9 vs 2
  • 13 points higher DxOMark score
    Leica APO Summicron SL 35mm F 2 ASPH has a higher DxOMark overall score than the average camera lens (39 vs 26). The average lens has a DxOMark overall score of 26.
    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

    Leica APO Summicron SL 35mm F 2 ASPH has a higher DxOMark overall score than the average camera lens (39 vs 26). The average lens has a DxOMark overall score of 26.39 vs 26
  • 16 points higher DxOMark sharpness
    Leica APO Summicron SL 35mm F 2 ASPH has a higher DxOMark sharpness score than the average camera lens (32 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

    Leica APO Summicron SL 35mm F 2 ASPH has a higher DxOMark sharpness score than the average camera lens (32 vs 16). The average lens has a DxOMark sharpness score of 16.32 vs 16
  • 1.1 T-stop lower transmission value
    Leica APO Summicron SL 35mm F 2 ASPH has a lower T-stop value than the average camera lens (2 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

    Leica APO Summicron SL 35mm F 2 ASPH has a lower T-stop value than the average camera lens (2 T-stop vs 3.1 T-stop). The average lens has a T-stop value of 3.1 T-stop.2.0 T-stop vs 3.1 T-stop
  • 1 more aspherical elements
    Leica APO Summicron SL 35mm F 2 ASPH has more aspherical elements than the average camera lens (3 vs 2). The average lens has 2 aspherical elements.
    What it is: Specially shaped lens elements used to reduce distortion and improve sharpness with fewer optical compromises.
    When it matters: When edge sharpness and lower distortion matter in wide-angle, travel, or everyday shooting.

    Importance: MEDIUM

    Leica APO Summicron SL 35mm F 2 ASPH has more aspherical elements than the average camera lens (3 vs 2). The average lens has 2 aspherical elements.3 vs 2
  • Newer release date
    Leica APO Summicron SL 35mm F 2 ASPH was released more recently than the average camera lens.
    February 2019
    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

    Leica APO Summicron SL 35mm F 2 ASPH was released more recently than the average camera lens.2019 vs 2016
  • 4 mm narrower lens barrel
    Leica APO Summicron SL 35mm F 2 ASPH is slimmer than the average camera lens (73 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

    Leica APO Summicron SL 35mm F 2 ASPH is slimmer than the average camera lens (73 mm vs 77 mm). The average lens has a diameter of 77 mm.73 mm vs 77 mm
  • 0.8 lower f-number at telephoto end
    Leica APO Summicron SL 35mm F 2 ASPH has a brighter maximum telephoto aperture than the average camera lens (f/2 vs f/2.8). The average lens has a maximum telephoto aperture of f/2.8.
  • 7 more low-dispersion elements
    Leica APO Summicron SL 35mm F 2 ASPH has more low-dispersion elements than the average camera lens (9 vs 2). The average lens has 2 low-dispersion elements.
  • 1 more aspherical elements
    Leica APO Summicron SL 35mm F 2 ASPH has more aspherical elements than the average camera lens (3 vs 2). The average lens has 2 aspherical elements.
  • 0.03 m shorter minimum focus distance
    Leica APO Summicron SL 35mm F 2 ASPH has a lower minimum focus distance than the average camera lens (0.3 m vs 0.3 m). The average lens has a minimum focus distance of 0.3 m.
  • Newer release date
    Leica APO Summicron SL 35mm F 2 ASPH was released more recently than the average camera lens.
  • 4 mm narrower lens barrel
    Leica APO Summicron SL 35mm F 2 ASPH is slimmer than the average camera lens (73 mm vs 77 mm). The average lens has a diameter of 77 mm.
  • 13 points higher DxOMark score
    Leica APO Summicron SL 35mm F 2 ASPH has a higher DxOMark overall score than the average camera lens (39 vs 26). The average lens has a DxOMark overall score of 26.
  • 16 points higher DxOMark sharpness
    Leica APO Summicron SL 35mm F 2 ASPH has a higher DxOMark sharpness score than the average camera lens (32 vs 16). The average lens has a DxOMark sharpness score of 16.
  • 1.1 T-stop lower transmission value
    Leica APO Summicron SL 35mm F 2 ASPH has a lower T-stop value than the average camera lens (2 T-stop vs 3.1 T-stop). The average lens has a T-stop value of 3.1 T-stop.
  • 10 mm longer lens
    Leica APO Summicron SL 35mm F 2 ASPH is longer than the average camera lens (102 mm vs 92 mm). The average lens has a length of 92 mm.
  • 10 mm longer lens
    Leica APO Summicron SL 35mm F 2 ASPH is longer than the average camera lens (102 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

    Leica APO Summicron SL 35mm F 2 ASPH is longer than the average camera lens (102 mm vs 92 mm). The average lens has a length of 92 mm.102 mm vs 92 mm
  • 8.28x more expensive
    Leica APO Summicron SL 35mm F 2 ASPH is more expensive than the average camera lens (£4,390 vs £530).
    Leica APO Summicron SL 35mm F 2 ASPH is more expensive than the average camera lens (£4,390 vs £530).£4,390 vs £530
  • 6.38x less popular
    Leica APO Summicron SL 35mm F 2 ASPH is less popular than the average camera lens (1.00 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.
    Leica APO Summicron SL 35mm F 2 ASPH is less popular than the average camera lens (1.00 vs 6.383).1 vs 6.38
  • 30.3% worse value for money
    Leica APO Summicron SL 35mm F 2 ASPH has a worse value-for-money score than the average camera lens (5.64 vs 7.346).
    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.
    Leica APO Summicron SL 35mm F 2 ASPH has a worse value-for-money score than the average camera lens (5.64 vs 7.346).5.64 vs 7.35
  • 10.8% lower user score
    Leica APO Summicron SL 35mm F 2 ASPH has a lower user score than the average camera lens (7.30 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.
    Leica APO Summicron SL 35mm F 2 ASPH has a lower user score than the average camera lens (7.30 vs 8.091).7.3 vs 8.09

Graphic comparison of Leica APO Summicron SL 35mm F 2 ASPH and

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Third-party reviews

United Kingdom
United States

(Reviews last updated: July 2026)

What customers like about Leica APO Summicron SL 35mm F 2 ASPH?

  • Exceptional center-to-corner sharpness even at f/2
  • Virtually non-existent chromatic aberration due to APO correction
  • Outstanding micro-contrast and lifelike color rendering
  • Smooth and pleasant bokeh with natural background separation
  • Quick and accurate autofocus performance
  • Robust, all-metal build with weather sealing
  • Close minimum focus distance of 27cm for versatile shots

What customers dislike about Leica APO Summicron SL 35mm F 2 ASPH?

  • Extremely high price point compared to rivals
  • Large and heavy for a 35mm f/2 lens (750g)
  • Lack of built-in optical image stabilization
  • Noticeable vignetting when shot wide open at f/2
  • Prone to some flare when shooting directly into bright lights
  • Lack of physical aperture ring or external controls

Expert reviews

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macfilos.com
01/03/2019
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15/01/2020
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reddotforum.com
03/03/2020
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photoreview.com.au
21/05/2021
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stevehuffphoto.com
06/08/2021
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slack.co.uk
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lenstip.com
10/02/2026
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tahusa.co
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fotogoerlitz.de
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dirkfietz.de
31/03/2023
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fotogoerlitz.de
14/05/2019
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fotografidigitali.it
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