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 9
First stacked-sensor mirrorless sports camera with 20fps blackout-free shooting.
$4,499
Released Apr 2017
EOS R6 Mark III is 8.6 years newer.
Wins
EOS R6 Mark III
Wins
Alpha 9
3 categories tied
TL;DR — Key differences
- AEOS R6 Mark III has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- AEOS R6 Mark III has higher 4K max frame rate (120 fps vs 30 fps)
- AEOS R6 Mark III has higher Burst (mechanical) (12 fps vs 5 fps)
- AEOS R6 Mark III has higher Burst (electronic) (40 fps vs 20 fps)
- AEOS R6 Mark III has higher IBIS effectiveness (8.5 stops vs 5 stops)
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 9
127 × 96 × 63 mm
673 g (1.48 lb / 23.74 oz)
EOS R6 Mark III is 12mm wider, 3mm taller, and 25mm thicker than Alpha 9.
EOS R6 Mark III is 26 g heavier than Alpha 9.
Depth (front-to-back): 88mm EOS R6 Mark III · 63mm Alpha 9
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Alpha 9
127 × 96 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 9
127 × 63 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 9
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
EOS R6 Mark III
Canon RF
105+
native lenses available
Alpha 9
✓ 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 -3 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…
4K max frame rate
120 fps vs 30 fps — higher is better
Burst (mechanical)
12 fps vs 5 fps — higher is better
Burst (electronic)
40 fps vs 20 fps — higher is better
Reasons to choose
Alpha 9
Subject recognition
Adds Human, Animal
Dimensions (W×H×D mm)
Adds 126.9, 95.6, 63
Codecs
Adds XAVC S, AVCHD
Card types
Adds SD UHS-I
RAW buffer depth
200 frames vs 150 frames — higher is better
Weight
673 g vs 699 g — lower is better
EVF magnification
0.78 × vs 0.76 × — higher is better
Battery life (CIPA)
650 shots vs 640 shots — 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
- ✓In-body stabilization — Both support in-body stabilization
- ✓Weather sealing — Both support weather sealing
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 9
Pros
- ✓Stacked sensor pioneer
- ✓20fps silent burst
- ✓Pro sports AF
Cons
- –Superseded by A9 II/III
- –24MP
- –Expensive when new
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R6 Mark III or Alpha 9?
EOS R6 Mark III scores 8.5/10 versus 6.0/10 for Alpha 9 — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R6 Mark III and Alpha 9?
EOS R6 Mark III is 32.5 MP and Alpha 9 is 24.2 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R6 Mark III and Alpha 9 have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while alpha 9 has 5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark III or the Alpha 9?
EOS R6 Mark III reaches 40 fps electronic. Alpha 9 reaches 20 fps electronic.
What's the weight difference between the EOS R6 Mark III and Alpha 9?
EOS R6 Mark III weighs 699 g and Alpha 9 weighs 673 g, so the Alpha 9 is 26 g lighter.
Do the EOS R6 Mark III and Alpha 9 record 4K video?
EOS R6 Mark III: 4K up to 120p. Alpha 9: 4K up to 30p.
Are the EOS R6 Mark III and Alpha 9 weather sealed?
EOS R6 Mark III: Yes. Alpha 9: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 650 shots for the Alpha 9, giving the Alpha 9 the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and Alpha 9 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.