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 1 II
50MP stacked flagship with 30fps RAW, 8K video, and Sony's fastest hybrid performance.
$6,499
Released Nov 2024
Alpha 1 II is 4 months newer.
Wins
EOS R1
Wins
Alpha 1 II
5 categories tied
TL;DR — Key differences
- AEOS R1 has higher ISO max (native) (102,400 vs 32,000)
- BAlpha 1 II has higher Resolution (50.1 MP vs 24.2 MP)
- BAlpha 1 II has lower Weight (743 g vs 1115 g)
- AEOS R1 has higher AF points / zones (1053 vs 759)
- AEOS R1 has higher Burst (electronic) (40 fps vs 30 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 1 II
136 × 97 × 83 mm
743 g (1.64 lb / 26.21 oz)
EOS R1 is 22mm wider, 53mm taller, and 4mm thicker than Alpha 1 II.
EOS R1 is 372 g heavier than Alpha 1 II.
Depth (front-to-back): 87mm EOS R1 · 83mm Alpha 1 II
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R1
158 × 150 mm
Alpha 1 II
136 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
EOS R1
158 × 87 mm
Alpha 1 II
136 × 83 mm
Sensor size, to scale
EOS R1
36 × 24 mm · Full Frame
864 mm² area
Alpha 1 II
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
EOS R1
Canon RF
105+
native lenses available
Alpha 1 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
ISO max (native)
102,400 vs 32,000 — higher is better
Codecs
Adds RAW, XF-HEVC S, XF-AVC S
AF points / zones
1053 vs 759 — higher is better
Burst (electronic)
40 fps vs 30 fps — higher is better
Reasons to choose
Alpha 1 II
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Card types
Adds CFexpress Type A, SD UHS-II
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Resolution
50.1 MP vs 24.2 MP — higher is better
Weight
743 g vs 1115 g — lower 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
- ✓4K max frame rate — Both 120 fps
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 1 II
Pros
- ✓50MP stacked sensor
- ✓30fps blackout-free burst
- ✓8K 30p video
- ✓Best Sony AF
Cons
- –Very expensive
- –Complex menus
- –Large files
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, EOS R1 or Alpha 1 II?
Alpha 1 II scores 9.5/10 versus 6.5/10 for EOS R1 — 30fps burst captures fleeting moments.
What's the resolution difference between the EOS R1 and Alpha 1 II?
EOS R1 is 24.2 MP and Alpha 1 II is 50.1 MP, so the Alpha 1 II captures more detail for cropping and large prints.
Do the EOS R1 and Alpha 1 II have in-body image stabilization?
EOS R1 has 8.5-stop in-body image stabilization, while alpha 1 II has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R1 or the Alpha 1 II?
EOS R1 reaches 40 fps electronic. Alpha 1 II reaches 30 fps electronic.
What's the weight difference between the EOS R1 and Alpha 1 II?
EOS R1 weighs 1115 g and Alpha 1 II weighs 743 g, so the Alpha 1 II is 372 g lighter.
Do the EOS R1 and Alpha 1 II record 4K video?
EOS R1: 6K RAW (max), 4K up to 120p. Alpha 1 II: 8K (max), 4K up to 120p.
Are the EOS R1 and Alpha 1 II weather sealed?
EOS R1: Yes. Alpha 1 II: Yes.
How much does each cost?
EOS R1 launched at $6,299 and Alpha 1 II at $6,499. The EOS R1 is $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.