Canon
EOS R1
Flagship 24.2MP full-frame BSI stacked RF body with 40fps burst, Dual Pixel Intelligent AF, 6K RAW, and 9.44M-dot EVF.
$6,299
Released Jul 2024
Sony
Alpha 7S II
12MP low-light video pioneer before the A7S III revolution.
$2,999
Released Sep 2015
EOS R1 is 8.8 years newer.
Wins
EOS R1
Wins
Alpha 7S II
2 categories tied
TL;DR — Key differences
- AEOS R1 has higher Burst (electronic) (40 fps vs 5 fps)
- AEOS R1 has higher AF points / zones (1053 vs 169)
- AEOS R1 has higher EVF resolution (9,440,000 vs 2,359,296)
- AEOS R1 has higher 4K max frame rate (120 fps vs 30 fps)
- AEOS R1 has higher Burst (mechanical) (12 fps vs 5 fps)
Key specs at a glance
Size and weight, to scale
EOS R1
158 × 150 × 87 mm
1115 g (2.46 lb / 39.33 oz)
Alpha 7S II
127 × 96 × 60 mm
627 g (1.38 lb / 22.12 oz)
EOS R1 is 31mm wider, 54mm taller, and 27mm thicker than Alpha 7S II.
EOS R1 is 488 g heavier than Alpha 7S II.
Depth (front-to-back): 87mm EOS R1 · 60mm Alpha 7S II
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R1
158 × 150 mm
Alpha 7S II
127 × 96 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R1
158 × 87 mm
Alpha 7S II
127 × 60 mm
Sensor size, to scale
EOS R1
36 × 24 mm · Full Frame
864 mm² area
Alpha 7S II
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
EOS R1
Canon RF
105+
native lenses available
Alpha 7S II
✓ 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 R1
AF low-light limit
-7.5 EV vs -4 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 157.6, 149.5, 87.3
Card types
Adds CFexpress Type B, CFexpress Type B
Burst (electronic)
40 fps vs 5 fps — higher is better
AF points / zones
1053 vs 169 — higher is better
Codecs
Adds RAW, XF-HEVC S, XF-AVC S…
EVF resolution
9,440,000 vs 2,359,296 — higher is better
Reasons to choose
Alpha 7S II
Subject recognition
Adds Human
Dimensions (W×H×D mm)
Adds 126.9, 95.7, 60.3
Card types
Adds SD UHS-I
Codecs
Adds XAVC S, AVCHD, MP4
Weight
627 g vs 1115 g — lower is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓ISO max (native) — Both 102,400
- ✓Eye AF — Both support eye 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 R1
Pros
- ✓40fps electronic burst
- ✓24.2MP BSI stacked full-frame sensor
- ✓Dual Pixel Intelligent AF
- ✓6K RAW and 4K 120p video
- ✓Dual CFexpress Type B slots
Cons
- –24MP resolution
- –Very expensive
- –Large integrated-grip body
Alpha 7S II
Pros
- ✓Legendary low light
- ✓4K internal
- ✓Compact files
Cons
- –12MP stills limit
- –Old AF
- –8-bit 4K
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, EOS R1 or Alpha 7S II?
EOS R1 scores 8.5/10 versus 1.5/10 for Alpha 7S II — 40fps burst — pro-level action capture.
What's the resolution difference between the EOS R1 and Alpha 7S II?
EOS R1 is 24.2 MP and Alpha 7S II is 12.2 MP, so the EOS R1 captures more detail for cropping and large prints.
Do the EOS R1 and Alpha 7S II have in-body image stabilization?
EOS R1 has 8.5-stop in-body image stabilization, while alpha 7S II has 4.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R1 or the Alpha 7S II?
EOS R1 reaches 40 fps electronic. Alpha 7S II reaches 5 fps electronic.
What's the weight difference between the EOS R1 and Alpha 7S II?
EOS R1 weighs 1115 g and Alpha 7S II weighs 627 g, so the Alpha 7S II is 488 g lighter.
Do the EOS R1 and Alpha 7S II record 4K video?
EOS R1: 6K RAW (max), 4K up to 120p. Alpha 7S II: 4K up to 30p.
Are the EOS R1 and Alpha 7S II weather sealed?
EOS R1: Yes. Alpha 7S II: Yes.
How much does each cost?
EOS R1 launched at $6,299 and Alpha 7S II at $2,999. The Alpha 7S II is $3,300 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Canon and Sony press materials.