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 7CR
61MP compact full-frame for resolution in a small body.
$2,999
Released Oct 2023
EOS R6 Mark III is 2.1 years newer.
Wins
EOS R6 Mark III
Wins
Alpha 7CR
2 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 Burst (electronic) (40 fps vs 7 fps)
- AEOS R6 Mark III has higher ISO max (native) (64,000 vs 32,000)
- AEOS R6 Mark III has higher 4K max frame rate (120 fps vs 60 fps)
- AEOS R6 Mark III has higher Card slots (2 vs 1)
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 7CR
124 × 71 × 63 mm
515 g (1.14 lb / 18.17 oz)
EOS R6 Mark III is 14mm wider, 27mm taller, and 25mm thicker than Alpha 7CR.
EOS R6 Mark III is 184 g heavier than Alpha 7CR.
Depth (front-to-back): 88mm EOS R6 Mark III · 63mm Alpha 7CR
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Alpha 7CR
124 × 71 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 7CR
124 × 63 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 7CR
35.7 × 23.8 mm · Full Frame
850 mm² area
Lens ecosystem
Native lens selection
EOS R6 Mark III
Canon RF
105+
native lenses available
Alpha 7CR
✓ 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
Burst (electronic)
40 fps vs 7 fps — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S
ISO max (native)
64,000 vs 32,000 — higher is better
Pre-Capture / Pre-Release
Only EOS R6 Mark III supports it
Reasons to choose
Alpha 7CR
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 124, 71.1, 63.4
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Resolution
61 MP vs 32.5 MP — higher is better
Weight
515 g vs 699 g — lower 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
- ✓Internal RAW video — Both support internal raw video
- ✓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 7CR
Pros
- ✓61MP in compact form
- ✓AI AF
- ✓High detail for landscapes
Cons
- –Smaller body ergonomics
- –Slower burst than A7R V
- –Price premium for size
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R6 Mark III or Alpha 7CR?
EOS R6 Mark III scores 8.5/10 versus 4.0/10 for Alpha 7CR — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R6 Mark III and Alpha 7CR?
EOS R6 Mark III is 32.5 MP and Alpha 7CR is 61 MP, so the Alpha 7CR captures more detail for cropping and large prints.
Do the EOS R6 Mark III and Alpha 7CR have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while alpha 7CR has 7-stop in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark III or the Alpha 7CR?
EOS R6 Mark III reaches 40 fps electronic. Alpha 7CR reaches 8 fps mechanical.
What's the weight difference between the EOS R6 Mark III and Alpha 7CR?
EOS R6 Mark III weighs 699 g and Alpha 7CR weighs 515 g, so the Alpha 7CR is 184 g lighter.
Do the EOS R6 Mark III and Alpha 7CR record 4K video?
EOS R6 Mark III: 4K up to 120p. Alpha 7CR: 4K up to 60p.
Are the EOS R6 Mark III and Alpha 7CR weather sealed?
EOS R6 Mark III: Yes. Alpha 7CR: 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 7CR, giving the EOS R6 Mark III the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and Alpha 7CR at $2,999. The EOS R6 Mark III is $200 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sony press materials.