Canon
EOS R3
Pro 24MP full-frame stacked-sensor body built for sports, news, wildlife, and high-speed hybrid capture.
$5,999
Released Sep 2021
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 4.8 years newer.
Wins
EOS R3
Wins
Alpha 7R VI
5 categories tied
TL;DR — Key differences
- AEOS R3 has higher Max video bit rate (2600 Mbps vs 600 Mbps)
- AEOS R3 has higher ISO max (native) (102,400 vs 32,000)
- BAlpha 7R VI has higher Resolution (66.8 MP vs 24.1 MP)
- BAlpha 7R VI has higher EVF resolution (9,437,184 vs 5,760,000)
- BAlpha 7R VI has lower Weight (713 g vs 1015 g)
Key specs at a glance
Size and weight, to scale
EOS R3
150 × 143 × 87 mm
1015 g (2.24 lb / 35.80 oz)
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
EOS R3 is 17mm wider, 46mm taller, and 4mm thicker than Alpha 7R VI.
EOS R3 is 302 g heavier than Alpha 7R VI.
Depth (front-to-back): 87mm EOS R3 · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R3
150 × 143 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 R3
150 × 87 mm
Alpha 7R VI
133 × 83 mm
Sensor size, to scale
EOS R3
36 × 24 mm · Full Frame
864 mm² area
Alpha 7R VI
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
EOS R3
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 R3
AF low-light limit
-7.5 EV vs -6 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 150, 142.6, 87.2
Card types
Adds CFexpress Type B, SD UHS-II
Max video bit rate
2600 Mbps vs 600 Mbps — higher is better
ISO max (native)
102,400 vs 32,000 — higher is better
AA filter
Only EOS R3 supports it
Internal RAW video
Only EOS R3 supports it
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
Resolution
66.8 MP vs 24.1 MP — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
EVF resolution
9,437,184 vs 5,760,000 — higher is better
Weight
713 g vs 1015 g — lower 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
- ✓Burst (electronic) — Both 30 fps
- ✓RAW buffer depth — Both 150 frames
- ✓4K max frame rate — Both 120 fps
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R3
Pros
- ✓30fps electronic burst from a stacked full-frame sensor
- ✓Exceptional low-light AF down to -7.5 EV
- ✓Integrated pro body with large LP-E19 battery
- ✓6K RAW video and 4K 120p
- ✓Rugged weather-sealed construction
Cons
- –24MP resolution trails higher-detail rivals
- –Large integrated-grip body
- –Expensive compared with enthusiast full-frame bodies
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
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R3 or Alpha 7R VI?
EOS R3 scores 7.0/10 versus 5.5/10 for Alpha 7R VI — 30fps burst — pro-level action capture.
What's the resolution difference between the EOS R3 and Alpha 7R VI?
EOS R3 is 24.1 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 R3 and Alpha 7R VI have in-body image stabilization?
EOS R3 has 8-stop in-body image stabilization, while alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the EOS R3 or the Alpha 7R VI?
EOS R3 reaches 30 fps electronic. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the EOS R3 and Alpha 7R VI?
EOS R3 weighs 1015 g and Alpha 7R VI weighs 713 g, so the Alpha 7R VI is 302 g lighter.
Do the EOS R3 and Alpha 7R VI record 4K video?
EOS R3: 6K RAW (max), 4K up to 120p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the EOS R3 and Alpha 7R VI weather sealed?
EOS R3: Yes. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 620 shots (CIPA) for the EOS R3 and 600 shots for the Alpha 7R VI, giving the EOS R3 the edge.
How much does each cost?
EOS R3 launched at $5,999 and Alpha 7R VI at $4,499. The Alpha 7R VI is $1,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sony press materials.