Canon
EOS R
Canon’s first full-frame RF mirrorless — launched the RF mount ecosystem.
$2,299
Released Sep 2018
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 7.8 years newer.
Wins
EOS R
Wins
Alpha 7R VI
3 categories tied
TL;DR — Key differences
- AEOS R has higher AF points / zones (5655 vs 759)
- BAlpha 7R VI has higher 4K max frame rate (120 fps vs 30 fps)
- BAlpha 7R VI has higher Max video bit rate (600 Mbps vs 150 Mbps)
- BAlpha 7R VI has higher EVF resolution (9,437,184 vs 2,360,000)
- BAlpha 7R VI has higher Burst (electronic) (30 fps vs 8 fps)
Key specs at a glance
Size and weight, to scale
EOS R
138 × 98 × 88 mm
720 g (1.59 lb / 25.40 oz)
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
EOS R is 5mm wider, 1mm taller, and 5mm thicker than Alpha 7R VI.
EOS R is 7 g heavier than Alpha 7R VI.
Depth (front-to-back): 88mm EOS R · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R
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 R
138 × 88 mm
Alpha 7R VI
133 × 83 mm
Sensor size, to scale
EOS R
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 R
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 R
Dimensions (W×H×D mm)
Adds 138, 98, 88
Card types
Adds SD UHS-II
AF points / zones
5655 vs 759 — higher is better
AA filter
Only EOS R supports it
Pre-Capture / Pre-Release
Only EOS R supports it
Weather sealing
Only EOS R supports it
ISO max (native)
40,000 vs 32,000 — higher is better
Battery life (CIPA)
640 shots vs 600 shots — higher is better
Reasons to choose
Alpha 7R VI
Dimensions (W×H×D mm)
Adds 132.7, 96.9, 82.9
Card types
Adds CFexpress Type A, SDXC UHS-II
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
4K max frame rate
120 fps vs 30 fps — higher is better
Max video bit rate
600 Mbps vs 150 Mbps — higher is better
EVF resolution
9,437,184 vs 2,360,000 — higher is better
Burst (electronic)
30 fps vs 8 fps — higher is better
RAW buffer depth
150 frames vs 60 frames — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓In-body stabilization — Both support in-body stabilization
- ✓Card slots — Both 2
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R
Pros
- ✓First Canon RF body
- ✓Dual Pixel AF
- ✓Fully articulating screen
Cons
- –No IBIS
- –Single card slot
- –Superseded by R6/R8
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 video, EOS R or Alpha 7R VI?
Alpha 7R VI scores 8.0/10 versus 5.0/10 for EOS R — 8K recording for future-proof footage.
What's the resolution difference between the EOS R and Alpha 7R VI?
EOS R is 30.3 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 R and Alpha 7R VI have in-body image stabilization?
EOS R has 6-stop in-body image stabilization, while alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the EOS R or the Alpha 7R VI?
EOS R reaches 8 fps electronic. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the EOS R and Alpha 7R VI?
EOS R weighs 720 g and Alpha 7R VI weighs 713 g, so the Alpha 7R VI is 7 g lighter.
Do the EOS R and Alpha 7R VI record 4K video?
EOS R: 4K up to 30p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the EOS R and Alpha 7R VI weather sealed?
EOS R: Yes. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 640 shots (CIPA) for the EOS R and 600 shots for the Alpha 7R VI, giving the EOS R the edge.
How much does each cost?
EOS R launched at $2,299 and Alpha 7R VI at $4,499. The EOS R is $2,200 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sony press materials.