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Canon EOS R6 Mark IIIvsSony a1 II: Full Comparison

The Canon EOS R6 Mark III and the Sony a1 II are advanced full-frame cameras built for demanding multimedia creators. Choosing between them comes down to whether you prioritize a lower entry price and faster burst speeds or ultra-high pixel counts and 8K video capture.

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Intro

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Best for

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Biggest differences

  • Viewfinder resolution

    Sony a1 II leads

    2.56×

    higher is better

    • Canon EOS R6 Mark III3.69 M dots
    • Sony a1 II9.44 M dots

  • Launch price

    Canon EOS R6 Mark III leads

    2.32×

    lower is better

    • Canon EOS R6 Mark III2,799 USD
    • Sony a1 II6,499.99 USD

  • Effective pixels

    Sony a1 II leads

    +54%

    higher is better

    • Canon EOS R6 Mark III32.5 MP
    • Sony a1 II50.1 MP

  • 4K max frame rate (full width)

    Canon EOS R6 Mark III leads

    2×

    higher is better

    • Canon EOS R6 Mark III120 fps
    • Sony a1 II59.94 fps

Features not all of them have

High resolution pixel-shift mode

  • Canon EOS R6 Mark III✕
  • Sony a1 II✓

Where each one wins

  • Canon EOS R6 Mark III

    • Launch price
    • Native ISO maximum
    • Continuous shooting (mechanical)
    • Continuous shooting (electronic)
    • 4K max frame rate
    • 4K max frame rate (full width)
    • Raw video recording
    • Battery life
    • Weight

  • Sony a1 II

    • High resolution pixel-shift mode
    • Effective pixels
    • Pre-burst capture duration
    • Max video resolution
    • Viewfinder resolution
    • Viewfinder magnification
    • Screen size
    • Screen articulation
    • Rear screen resolution
    • Width
    • Height
    • Depth

What both have

  • Sensor formatFull-frame
  • In-body image stabilization8.5 stops
  • Aspect ratios3:2
  • Max mechanical shutter speed8,000 1/s
  • Video bit depth10 bit
  • Log profile support✓
  • Memory card slots2 slots
  • Weather sealingDust and drip resistant
  • USB charging & power delivery✓
  • Minimum operating temperature0 °C
  • Headphone port✓
  • HDMI port typeFull-size

Every spec

Red marks the better value in each row.

SpecCanon EOS R6 Mark IIISony a1 II
Overview

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Overview specs

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Release date2025-112024-121
Launch price2,799 USD6,499.99 USD
Lens mountCanon RFSony E
High resolution pixel-shift modeNoYes2
Sensor & Image

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Sensor & Image specs

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Effective pixels32.5 MP50.1 MP
Sensor formatFull-frameFull-frame
Native ISO maximum64,000 ISO32,000 ISO
In-body image stabilization8.5 stops38.5 stops4
Sensor readout speed13.2 msNot published
Sensor typeCMOS—
Aspect ratios3:23:2
Lens & Autofocus

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Lens & Autofocus specs

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Continuous shooting (mechanical)12 fps10 fps
Continuous shooting (electronic)40 fps30 fps
Max mechanical shutter speed8,000 1/s8,000 1/s
Pre-burst capture duration0.5 s51 s6
AF subject detectionHuman, animal, bird, car, train, airplane, motorcycle7Human, animal, bird, insect, car, train, airplane
Video

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Video specs

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Max video resolution7K88K
4K max frame rate119.9 fps119.88 fps9
Video codecsH.264, HEVC, XF-AVC, XF-HEVCH.264, HEVC
4K max frame rate (full width)120 fps1059.94 fps11
Raw video recordingInternalExternal12
Video bit depth10 bit10 bit
Log profile supportYesYes
Video dynamic range (log)15 stops13Not published
Viewfinder & Screen

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Viewfinder & Screen specs

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Viewfinder resolution3.69 M dots9.44 M dots
Viewfinder magnification0.76 x0.9 x
Screen size3 in3.2 in
Screen articulationFully articulatedMulti-angle
Rear screen resolution1.6 M dots2.1 M dots
Handling & Power

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Handling & Power specs

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Battery life620 shots14520 shots15
Memory card slots2 slots2 slots
Weather sealingDust and drip resistantDust and drip resistant16
Weight699 g743 g
Width138.4 mm136.1 mm
Height98.4 mm96.9 mm
Depth88.4 mm82.9 mm17
USB charging & power deliveryYes18Yes
Minimum operating temperature0 °C0 °C
Headphone portYesYes
HDMI port typeFull-sizeFull-size
Notes on 18 values — test conditions and caveats
  1. 1Sony a1 II, Release date: Announced 19 November 2024; first retail availability was December 2024.
  2. 2Sony a1 II, High resolution pixel-shift mode: 4- or 16-shot pixel shift composites are merged with Sony's Imaging Edge Desktop PC software.
  3. 3Canon EOS R6 Mark III, In-body image stabilization: 8.5 stops is Canon's best-case center rating with certain RF lenses; peripheral and other lenses see less, down to 7.5 stops.
  4. 4Sony a1 II, In-body image stabilization: 8.5 stops is the CIPA centre rating; 7.0 stops at the periphery.
  5. 5Canon EOS R6 Mark III, Pre-burst capture duration: Works only in the 40 fps electronic-shutter mode; Canon states it as up to 20 frames.
  6. 6Sony a1 II, Pre-burst capture duration: Pre-capture buffers between 0.03 s and 1 s of frames before full shutter press.
  7. 7Canon EOS R6 Mark III, AF subject detection: Car detection is tuned for racing cars, per Canon.
  8. 8Canon EOS R6 Mark III, Max video resolution: 7K is available only in RAW Video mode; standard MP4 recording tops out at 4K.
  9. 9Sony a1 II, 4K max frame rate: 4K 100p/120p recording uses a 1.1x crop.
  10. 10Canon EOS R6 Mark III, 4K max frame rate (full width): 4K 120p uses the full width but is not oversampled; oversampled 4K tops out at 60p.
  11. 11Sony a1 II, 4K max frame rate (full width): Full-width 4K tops out at 59.94p; 4K 100/120p requires a 1.1x crop.
  12. 12Sony a1 II, Raw video recording: 16-bit RAW video can only be output over HDMI to an external recorder; no internal RAW recording.
  13. 13Canon EOS R6 Mark III, Video dynamic range (log): Canon's claim of 15+ stops in its Canon Log profiles, not a lab measurement.
  14. 14Canon EOS R6 Mark III, Battery life: 620 shots is CIPA's rating using the rear LCD (not the viewfinder) at 23°C; real-world results vary.
  15. 15Sony a1 II, Battery life: CIPA rating is 520 shots per charge on the rear LCD; 420 shots with the viewfinder.
  16. 16Sony a1 II, Weather sealing: Sony specifies dust- and moisture-resistant sealing; no formal IP rating is published.
  17. 17Sony a1 II, Depth: Sony also lists 72.8 mm depth measured from grip to monitor, excluding the grip protrusion.
  18. 18Canon EOS R6 Mark III, USB charging & power delivery: USB-C charging and power need a capable USB-PD source such as Canon's PD-E2; not every power bank works.

Image quality and resolution

The Sony a1 II delivers 50.1 megapixels for massive prints and heavy cropping room. If you need ultimate detail, its high-resolution pixel-shift mode merges multiple shots into a giant composite.

The Canon EOS R6 Mark III counters with 32.5 megapixels, which is plenty for most workflows and yields smaller file sizes. It also provides a higher native ISO maximum of 64,000 for cleaner low-light shooting without boosting exposure in post.

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Image quality and resolution

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Speed and autofocus

The Canon hits 40 fps in electronic shooting and 12 fps with the mechanical shutter, edging out the Sony's 30 fps and 10 fps limits. Both models track a wide variety of subjects from animals to aircraft, with Canon adding a dedicated racing car tune to its vehicle detection.

For unpredictable action, the Sony includes a longer pre-burst capture duration of up to 1 second. This captures moments right before you press the shutter fully, whereas the Canon limits pre-burst to 0.5 seconds in its 40 fps electronic mode.

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Speed and autofocus

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Video capabilities

The Sony wins on base resolution by offering 8K video recording. The Canon caps standard MP4 recording at 4K, pushing 7K only when you switch to RAW video mode.

For high frame rates, the Canon records 4K at 120 fps across the full sensor width without a crop, though it uses line-skipping rather than oversampling. The Sony also shoots 4K at 120p, but requires a 1.1x crop. Both output 10-bit video with log profiles, but only the Canon records RAW internally.

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Video capabilities

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Handling and display

The Sony features a sharper 9.44M-dot viewfinder with a larger 0.9x magnification, alongside a slightly larger 3.2-inch multi-angle screen with 2.1M dots. The Canon uses a 3.69M-dot EVF and a fully articulated 3-inch screen with 1.6M dots.

At 699 g, the Canon is lighter than the 743 g Sony. Both cameras include dual memory card slots, full-size HDMI ports, and dust- and drip-resistant weather sealing.

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Handling and display

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The Verdict

Buy the Canon EOS R6 Mark III if you want faster burst speeds and internal raw video at a much lower price. Buy the Sony a1 II if you require a high-resolution sensor, 8K video, and maximum viewfinder clarity.

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Verdict

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Where to buy

FAQ

Which camera is cheaper at launch?

The Canon EOS R6 Mark III launches at $2,799 USD, making it significantly less expensive than the Sony a1 II at $6,499.99 USD.

Do both cameras feature in-body image stabilization?

Yes, both models feature in-body image stabilization rated for 8.5 stops at the center under specific conditions.

What kind of lens mounts do they use?

The Canon uses the Canon RF lens mount, while the Sony relies on the Sony E mount.

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FAQ

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