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
Launch priceReleased Jul 2024
Sony
Alpha 7S
12MP low-light video legend that changed indie filmmaking with incredible high ISO performance.
$2,499
Launch priceReleased Apr 2014
EOS R1 is 10.3 years newer.
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Wins
EOS R1
Wins
Alpha 7S
2 categories tied
Which would you choose?
TL;DR — Key differences
- AEOS R1 has higher ISO max (native) (102,400 vs 25,600)
- AEOS R1 has higher EVF resolution (9,440,000 vs 3,690,000)
- AEOS R1 has higher Battery life (CIPA) (1330 shots vs 640 shots)
- AEOS R1 has higher Burst (electronic) (40 fps vs 20 fps)
- AEOS R1 has higher 4K max frame rate (120 fps vs 60 fps)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to share
EOS R1
158 × 150 × 87 mm
920 g (2.03 lb / 32.45 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7S
127 × 94 × 48 mm
489 g (1.08 lb / 17.25 oz)
EOS R1 is 31mm wider, 55mm taller, and 39mm thicker than Alpha 7S.
EOS R1 is 431 g heavier than Alpha 7S.
Depth (front-to-back): 87mm EOS R1 · 48mm Alpha 7S
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R1
158 × 150 mm
Credit card
85.6 × 54 mm
Alpha 7S
127 × 94 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R1
158 × 87 mm
Credit card
85.6 × 54 mm
Alpha 7S
127 × 48 mm
Sensor size, to scale
EOS R1
36 × 24 mm · Full Frame
864 mm² area
Alpha 7S
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
✓ 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
ISO max (native)
102,400 vs 25,600 — higher is better
EVF resolution
9,440,000 vs 3,690,000 — higher is better
Codecs
Adds RAW, XF-HEVC S, XF-AVC S
Battery life (CIPA)
1330 shots vs 640 shots — higher is better
Reasons to choose
Alpha 7S
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 126.9, 94.4, 48.2
Card types
Adds SD UHS-II
Weight
489 g vs 920 g — lower is better
Codecs
Adds ProRes
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
- ✓Internal RAW video — Both support internal raw video
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
Pros
- ✓Legendary low light
- ✓12MP optimized for video
- ✓Full-frame
- ✓Historic video body
Cons
- –12MP for stills
- –No IBIS
- –Superseded by a7S series
Decided which one is right for you?
Compare live prices for the EOS R1 and Alpha 7S at major authorized retailers.
Canon EOS R1
Sony Alpha 7S
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS R1 or Alpha 7S?
Alpha 7S scores 9.0/10 versus 6.5/10 for EOS R1 — 20fps burst captures fleeting moments.
What's the resolution difference between the EOS R1 and Alpha 7S?
EOS R1 is 24.2 MP and Alpha 7S is 12.2 MP, so the EOS R1 captures more detail for cropping and large prints.
Do the EOS R1 and Alpha 7S have in-body image stabilization?
EOS R1 has 8.5-stop in-body image stabilization, while Alpha 7S has 7-stop in-body image stabilization.
Which shoots faster bursts — the EOS R1 or the Alpha 7S?
EOS R1 reaches 40 fps electronic. Alpha 7S reaches 20 fps electronic.
What's the weight difference between the EOS R1 and Alpha 7S?
EOS R1 weighs 920 g and Alpha 7S weighs 489 g, so the Alpha 7S is 431 g lighter.
Do the EOS R1 and Alpha 7S record 4K video?
EOS R1: 6K RAW (max), 4K up to 120p. Alpha 7S: 4K up to 60p.
Are the EOS R1 and Alpha 7S weather sealed?
EOS R1: Yes. Alpha 7S: Yes.
Which has better battery life?
Rated battery life is 1,330 shots (CIPA) for the EOS R1 and 640 shots for the Alpha 7S, giving the EOS R1 the edge.
How much does each cost?
EOS R1 launched at $6,299 and Alpha 7S at $2,499. The Alpha 7S is $3,800 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R1 vs Alpha 7S 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.