Canon
EOS R5 Mark II
45MP stacked-sensor powerhouse with 8K 60p RAW internal and 30fps burst.
$4,299
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 5 months newer.
Wins
EOS R5 Mark II
Wins
Alpha 1 II
5 categories tied
TL;DR — Key differences
- AEOS R5 Mark II has higher Max video bit rate (2600 Mbps vs 150 Mbps)
- AEOS R5 Mark II has higher RAW buffer depth (600 frames vs 200 frames)
- BAlpha 1 II has higher EVF refresh rate (240 Hz vs 120 Hz)
- BAlpha 1 II has higher EVF resolution (9,437,184 vs 5,760,000)
- BAlpha 1 II has higher Battery life (CIPA) (520 shots vs 320 shots)
Key specs at a glance
Size and weight, to scale
EOS R5 Mark II
138 × 101 × 94 mm
746 g (1.64 lb / 26.31 oz)
Alpha 1 II
136 × 97 × 83 mm
743 g (1.64 lb / 26.21 oz)
EOS R5 Mark II is 2mm wider, 4mm taller, and 11mm thicker than Alpha 1 II.
EOS R5 Mark II is 3 g heavier than Alpha 1 II.
Depth (front-to-back): 94mm EOS R5 Mark II · 83mm Alpha 1 II
Back view, to scale
Width × Height — same proportions as the front of the body.
EOS R5 Mark II
138 × 101 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 R5 Mark II
138 × 94 mm
Alpha 1 II
136 × 83 mm
Sensor size, to scale
EOS R5 Mark II
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 R5 Mark II
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 R5 Mark II
AF low-light limit
-6.5 EV vs -4 EV — lower is better
Subject recognition
Adds People, Dogs, Cats…
Dimensions (W×H×D mm)
Adds 138.4, 101.2, 93.5
Max video bit rate
2600 Mbps vs 150 Mbps — higher is better
RAW buffer depth
600 frames vs 200 frames — higher is better
Codecs
Adds RAW, XF-HEVC S, XF-AVC S
Card types
Adds CFexpress Type B
ISO max (native)
51,200 vs 32,000 — 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
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Card types
Adds CFexpress Type A
EVF refresh rate
240 Hz vs 120 Hz — higher is better
EVF resolution
9,437,184 vs 5,760,000 — higher is better
Battery life (CIPA)
520 shots vs 320 shots — higher is better
EVF magnification
0.9 × vs 0.76 × — higher 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
- ✓Burst (electronic) — Both 30 fps
- ✓Pre-Capture / Pre-Release — Both support pre-capture / pre-release
Pros & cons at a glance
Editorially curated highlights and trade-offs.
EOS R5 Mark II
Pros
- ✓45MP stacked CMOS — speed and resolution
- ✓8K 60p RAW internal recording
- ✓30fps electronic burst at full 45MP
- ✓5.76M dot EVF
Cons
- –Premium $4,299 price
- –Short battery life (320 CIPA shots)
- –Body heat in extended 8K sessions
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 R5 Mark II or Alpha 1 II?
Alpha 1 II scores 9.5/10 versus 6.5/10 for EOS R5 Mark II — 30fps burst captures fleeting moments.
What's the resolution difference between the EOS R5 Mark II and Alpha 1 II?
EOS R5 Mark II is 45 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 R5 Mark II and Alpha 1 II have in-body image stabilization?
EOS R5 Mark II 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 R5 Mark II or the Alpha 1 II?
EOS R5 Mark II reaches 30 fps electronic. Alpha 1 II reaches 30 fps electronic.
What's the weight difference between the EOS R5 Mark II and Alpha 1 II?
EOS R5 Mark II weighs 746 g and Alpha 1 II weighs 743 g, so the Alpha 1 II is 3 g lighter.
Do the EOS R5 Mark II and Alpha 1 II record 4K video?
EOS R5 Mark II: 8K RAW (max), 4K up to 120p. Alpha 1 II: 8K (max), 4K up to 120p.
Are the EOS R5 Mark II and Alpha 1 II weather sealed?
EOS R5 Mark II: Yes. Alpha 1 II: Yes.
Which has better battery life?
Rated battery life is 320 shots (CIPA) for the EOS R5 Mark II and 520 shots for the Alpha 1 II, giving the Alpha 1 II the edge.
How much does each cost?
EOS R5 Mark II launched at $4,299 and Alpha 1 II at $6,499. The EOS R5 Mark II 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.