Canon
EOS R6 Mark III
Hybrid 32.5MP full-frame RF body with 7K RAW video, 40fps electronic burst, 8.5-stop IBIS, and Dual Pixel CMOS AF II.
$2,799
Released Nov 2025
Sony
Alpha 1 II
50MP stacked flagship with 30fps RAW, 8K video, and Sony's fastest hybrid performance.
$6,499
Released Nov 2024
EOS R6 Mark III is 11 months newer.
Wins
EOS R6 Mark III
Wins
Alpha 1 II
4 categories tied
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TL;DR — Key differences
- AEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- BAlpha 1 II has higher EVF resolution (9,437,184 vs 3,690,000)
- AEOS R6 Mark III has higher ISO max (native) (64,000 vs 32,000)
- BAlpha 1 II has higher EVF refresh rate (240 Hz vs 120 Hz)
- BAlpha 1 II has higher Resolution (50.1 MP vs 32.5 MP)
Key specs at a glance
Size and weight, to scale
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
Alpha 1 II
136 × 97 × 83 mm
743 g (1.64 lb / 26.21 oz)
EOS R6 Mark III is 2mm wider, 2mm taller, and 6mm thicker than Alpha 1 II.
EOS R6 Mark III is 44 g lighter than Alpha 1 II.
Depth (front-to-back): 88mm EOS R6 Mark III · 83mm Alpha 1 II
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Alpha 1 II
136 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R6 Mark III
138 × 88 mm
Alpha 1 II
136 × 83 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 1 II
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
EOS R6 Mark III
Canon RF
105+
native lenses available
Alpha 1 II
✓ more lensesSony E
350+
native lenses available
Counts include current first-party and major third-party native autofocus lenses.
Use-case scoring
Which one for what?
Algorithmic scores from verified specs · 10 = best in class
Why pick one over the other
Reasons to choose
EOS R6 Mark III
AF low-light limit
-6.5 EV vs -4 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S
ISO max (native)
64,000 vs 32,000 — higher is better
Card types
Adds CFexpress Type B
AF points / zones
1053 vs 759 — higher is better
Reasons to choose
Alpha 1 II
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
EVF resolution
9,437,184 vs 3,690,000 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Card types
Adds CFexpress Type A
EVF refresh rate
240 Hz vs 120 Hz — higher is better
Resolution
50.1 MP vs 32.5 MP — higher is better
RAW buffer depth
200 frames vs 150 frames — higher is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
- ✓4K max frame rate — Both 120 fps
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R6 Mark III
Pros
- ✓32.5MP full-frame sensor
- ✓7K RAW video & 4K 120p
- ✓40fps electronic burst with Pre-Continuous
- ✓8.5-stop IBIS
Cons
- –Single CFexpress Type B + SD slot
- –Smaller LCD than R5 II
- –LP-E6P required for full features
Alpha 1 II
Pros
- ✓50MP stacked sensor
- ✓30fps blackout-free burst
- ✓8K 30p video
- ✓Best Sony AF
Cons
- –Very expensive
- –Complex menus
- –Large files
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, EOS R6 Mark III or Alpha 1 II?
Alpha 1 II scores 9.5/10 versus 6.5/10 for EOS R6 Mark III — 8K recording for future-proof footage.
What's the resolution difference between the EOS R6 Mark III and Alpha 1 II?
EOS R6 Mark III is 32.5 MP and Alpha 1 II is 50.1 MP, so the Alpha 1 II captures more detail for cropping and large prints.
Do the EOS R6 Mark III and Alpha 1 II have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while alpha 1 II has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark III or the Alpha 1 II?
EOS R6 Mark III reaches 40 fps electronic. Alpha 1 II reaches 30 fps electronic.
What's the weight difference between the EOS R6 Mark III and Alpha 1 II?
EOS R6 Mark III weighs 699 g and Alpha 1 II weighs 743 g, so the EOS R6 Mark III is 44 g lighter.
Do the EOS R6 Mark III and Alpha 1 II record 4K video?
EOS R6 Mark III: 4K up to 120p. Alpha 1 II: 8K (max), 4K up to 120p.
Are the EOS R6 Mark III and Alpha 1 II weather sealed?
EOS R6 Mark III: Yes. Alpha 1 II: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 520 shots for the Alpha 1 II, giving the EOS R6 Mark III the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and Alpha 1 II at $6,499. The EOS R6 Mark III is $3,700 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sony press materials.