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 7R VI
66.8MP fully-stacked full-frame high-resolution body with 30fps bursts, 8K 30p, 4K 120p, and Sony's new BIONZ XR2 engine.
$4,499
Released Jun 2026
Alpha 7R VI is 7 months newer.
Wins
EOS R6 Mark III
Wins
Alpha 7R VI
4 categories tied
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TL;DR — Key differences
- AEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 600 Mbps)
- BAlpha 7R VI has higher EVF resolution (9,437,184 vs 3,690,000)
- BAlpha 7R VI has higher Resolution (66.8 MP vs 32.5 MP)
- AEOS R6 Mark III has higher ISO max (native) (64,000 vs 32,000)
- AEOS R6 Mark III has higher AF points / zones (1053 vs 759)
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 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
EOS R6 Mark III is 6mm wider, 2mm taller, and 6mm thicker than Alpha 7R VI.
EOS R6 Mark III is 14 g lighter than Alpha 7R VI.
Depth (front-to-back): 88mm EOS R6 Mark III · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Alpha 7R VI
133 × 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 7R VI
133 × 83 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 7R VI
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 7R VI
✓ 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
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 138.4, 98.4, 88.4
Card types
Adds CFexpress Type B, SD UHS-II
Max video bit rate
2600 Mbps vs 600 Mbps — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S
AA filter
Only EOS R6 Mark III supports it
ISO max (native)
64,000 vs 32,000 — higher is better
AF low-light limit
-6.5 EV vs -6 EV — lower is better
Reasons to choose
Alpha 7R VI
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 132.7, 96.9, 82.9
Card types
Adds CFexpress Type A, SDXC UHS-II
EVF resolution
9,437,184 vs 3,690,000 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Resolution
66.8 MP vs 32.5 MP — higher is better
EVF magnification
0.9 × vs 0.76 × — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓RAW buffer depth — Both 150 frames
- ✓4K max frame rate — Both 120 fps
- ✓In-body stabilization — Both support in-body stabilization
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 7R VI
Pros
- ✓66.8MP fully-stacked Exmor RS sensor
- ✓30fps blackout-free electronic burst
- ✓8K 30p and 4K 120p video
- ✓8.5-stop in-body stabilization
- ✓9.44M-dot HDR OLED EVF
Cons
- –Very expensive
- –Large files demand fast cards and storage
- –8K workflow can be heavy
Decided which one is right for you?
Compare live prices for the EOS R6 Mark III and Alpha 7R VI at major authorized retailers.
Canon EOS R6 Mark III
Sony Alpha 7R VI
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R6 Mark III or Alpha 7R VI?
EOS R6 Mark III scores 8.5/10 versus 5.5/10 for Alpha 7R VI — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R6 Mark III and Alpha 7R VI?
EOS R6 Mark III is 32.5 MP and Alpha 7R VI is 66.8 MP, so the Alpha 7R VI captures more detail for cropping and large prints.
Do the EOS R6 Mark III and Alpha 7R VI have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark III or the Alpha 7R VI?
EOS R6 Mark III reaches 40 fps electronic. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the EOS R6 Mark III and Alpha 7R VI?
EOS R6 Mark III weighs 699 g and Alpha 7R VI weighs 713 g, so the EOS R6 Mark III is 14 g lighter.
Do the EOS R6 Mark III and Alpha 7R VI record 4K video?
EOS R6 Mark III: 4K up to 120p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the EOS R6 Mark III and Alpha 7R VI weather sealed?
EOS R6 Mark III: Yes. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 600 shots for the Alpha 7R VI, giving the EOS R6 Mark III the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and Alpha 7R VI at $4,499. The EOS R6 Mark III is $1,700 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sony press materials.