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 99 II
42MP A-mount flagship with translucent mirror, 12fps, and 5-axis IBIS for Sony/Minolta lenses.
$3,199
Launch priceReleased Nov 2016
EOS R1 is 7.7 years newer.
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Wins
EOS R1
Wins
Alpha 99 II
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 99 II
143 × 105 × 82 mm
849 g (1.87 lb / 29.95 oz)
EOS R1 is 15mm wider, 45mm taller, and 6mm thicker than Alpha 99 II.
EOS R1 is 71 g heavier than Alpha 99 II.
Depth (front-to-back): 87mm EOS R1 · 82mm Alpha 99 II
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 99 II
143 × 105 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 99 II
143 × 82 mm
Sensor size, to scale
EOS R1
36 × 24 mm · Full Frame
864 mm² area
Alpha 99 II
35.9 × 24 mm · Full Frame
862 mm² area
Lens ecosystem
Native lens selection
EOS R1
✓ more lensesCanon RF
105+
native lenses available
Alpha 99 II: mount data unavailable
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 99 II
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 142.6, 104.8, 81.6
Card types
Adds SD UHS-II
Resolution
42.4 MP vs 24.2 MP — higher is better
Weight
849 g vs 920 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
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
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 99 II
Pros
- ✓42MP A-mount
- ✓5-axis IBIS
- ✓12fps
- ✓Huge Minolta lens library
Cons
- –A-mount declining
- –Translucent mirror system
- –Large body
Decided which one is right for you?
Compare live prices for the EOS R1 and Alpha 99 II at major authorized retailers.
Canon EOS R1
Sony Alpha 99 II
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Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, EOS R1 or Alpha 99 II?
EOS R1 scores 9.0/10 versus 6.0/10 for Alpha 99 II — 6K video for oversampled 4K.
What's the resolution difference between the EOS R1 and Alpha 99 II?
EOS R1 is 24.2 MP and Alpha 99 II is 42.4 MP, so the Alpha 99 II captures more detail for cropping and large prints.
Do the EOS R1 and Alpha 99 II have in-body image stabilization?
EOS R1 has 8.5-stop in-body image stabilization, while Alpha 99 II has 4.5-stop in-body image stabilization.
Which shoots faster bursts — the EOS R1 or the Alpha 99 II?
EOS R1 reaches 40 fps electronic. Alpha 99 II reaches 20 fps electronic.
What's the weight difference between the EOS R1 and Alpha 99 II?
EOS R1 weighs 920 g and Alpha 99 II weighs 849 g, so the Alpha 99 II is 71 g lighter.
Do the EOS R1 and Alpha 99 II record 4K video?
EOS R1: 6K RAW (max), 4K up to 120p. Alpha 99 II: 4K up to 60p.
Are the EOS R1 and Alpha 99 II weather sealed?
EOS R1: Yes. Alpha 99 II: Yes.
Which has better battery life?
Rated battery life is 1,330 shots (CIPA) for the EOS R1 and 640 shots for the Alpha 99 II, giving the EOS R1 the edge.
How much does each cost?
EOS R1 launched at $6,299 and Alpha 99 II at $3,199. The Alpha 99 II is $3,100 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way EOS R1 vs Alpha 99 II 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.