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
Launch priceReleased Nov 2025
Sony
Alpha 7
The original full-frame mirrorless that started the E-mount revolution — 24MP in a compact body.
$1,699
Launch priceReleased Oct 2013
EOS R6 Mark III is 12.1 years newer.
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Wins
EOS R6 Mark III
Wins
Alpha 7
4 categories tied
Which would you choose?
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 15 fps)
- AEOS R6 Mark III has higher ISO max (native) (64,000 vs 25,600)
- AEOS R6 Mark III has higher RAW buffer depth (150 frames vs 60 frames)
- AEOS R6 Mark III has higher Burst (mechanical) (12 fps vs 6 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R6 Mark III
138 × 98 × 88 mm
699 g (1.54 lb / 24.66 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7
127 × 94 × 48 mm
474 g (1.04 lb / 16.72 oz)
EOS R6 Mark III is 12mm wider, 4mm taller, and 40mm thicker than Alpha 7.
EOS R6 Mark III is 225 g heavier than Alpha 7.
Depth (front-to-back): 88mm EOS R6 Mark III · 48mm Alpha 7
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R6 Mark III
138 × 98 mm
Credit card
85.6 × 54 mm
Alpha 7
127 × 94 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
Credit card
85.6 × 54 mm
Alpha 7
127 × 48 mm
Sensor size, to scale
EOS R6 Mark III
35.9 × 23.9 mm · Full Frame
858 mm² area
Alpha 7
35.8 × 23.9 mm · Full Frame
856 mm² area
Lens ecosystem
Native lens selection
EOS R6 Mark III
Canon RF
105+
native lenses available
Alpha 7
✓ 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 15 fps — higher is better
ISO max (native)
64,000 vs 25,600 — higher is better
RAW buffer depth
150 frames vs 60 frames — higher is better
Codecs
Adds CRM, XF-HEVC S, XF-AVC S
Reasons to choose
Alpha 7
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 126.9, 94.4, 48.2
Weight
474 g vs 699 g — lower is better
EVF magnification
0.78 × vs 0.76 × — 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
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
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 7
Pros
- ✓Historic first FF mirrorless
- ✓Compact for era
- ✓24MP full-frame
- ✓Affordable used
Cons
- –Slow AF by modern standards
- –No IBIS
- –Superseded many times
Decided which one is right for you?
Compare live prices for the EOS R6 Mark III and Alpha 7 at major authorized retailers.
Canon EOS R6 Mark III
Sony Alpha 7
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R6 Mark III or Alpha 7?
EOS R6 Mark III scores 10.0/10 versus 8.0/10 for Alpha 7 — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R6 Mark III and Alpha 7?
EOS R6 Mark III is 32.5 MP and Alpha 7 is 24.3 MP, so the EOS R6 Mark III captures more detail for cropping and large prints.
Do the EOS R6 Mark III and Alpha 7 have in-body image stabilization?
EOS R6 Mark III has 8.5-stop in-body image stabilization, while Alpha 7 has 6-stop in-body image stabilization.
Which shoots faster bursts — the EOS R6 Mark III or the Alpha 7?
EOS R6 Mark III reaches 40 fps electronic. Alpha 7 reaches 15 fps electronic.
What's the weight difference between the EOS R6 Mark III and Alpha 7?
EOS R6 Mark III weighs 699 g and Alpha 7 weighs 474 g, so the Alpha 7 is 225 g lighter.
Do the EOS R6 Mark III and Alpha 7 record 4K video?
EOS R6 Mark III: 4K up to 120p. Alpha 7: 4K up to 60p.
Are the EOS R6 Mark III and Alpha 7 weather sealed?
EOS R6 Mark III: Yes. Alpha 7: Yes.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R6 Mark III and 640 shots for the Alpha 7, giving the Alpha 7 the edge.
How much does each cost?
EOS R6 Mark III launched at $2,799 and Alpha 7 at $1,699. The Alpha 7 is $1,100 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R6 Mark III vs Alpha 7 vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed June 2026.
Product images courtesy of Canon and Sony press materials.