Sony
Alpha 1 II
50MP stacked flagship with 30fps RAW, 8K video, and Sony's fastest hybrid performance.
$6,499
Released Nov 2024
Sony
Alpha 9
First stacked-sensor mirrorless sports camera with 20fps blackout-free shooting.
$4,499
Released Apr 2017
Alpha 1 II is 7.6 years newer.
Wins
Alpha 1 II
Wins
Alpha 9
5 categories tied
TL;DR — Key differences
- AAlpha 1 II has higher 4K max frame rate (120 fps vs 30 fps)
- AAlpha 1 II has higher EVF resolution (9,437,184 vs 3,686,400)
- AAlpha 1 II has higher Resolution (50.1 MP vs 24.2 MP)
- AAlpha 1 II has higher Burst (mechanical) (10 fps vs 5 fps)
- AAlpha 1 II has higher EVF refresh rate (240 Hz vs 120 Hz)
Key specs at a glance
Size and weight, to scale
Alpha 1 II
136 × 97 × 83 mm
743 g (1.64 lb / 26.21 oz)
Alpha 9
127 × 96 × 63 mm
673 g (1.48 lb / 23.74 oz)
Alpha 1 II is 9mm wider, 1mm taller, and 20mm thicker than Alpha 9.
Alpha 1 II is 70 g heavier than Alpha 9.
Depth (front-to-back): 83mm Alpha 1 II · 63mm Alpha 9
Sensor size, to scale
Alpha 1 II
35.9 × 24 mm · Full Frame
862 mm² area
Alpha 9
35.6 × 23.8 mm · Full Frame
847 mm² area
Lens ecosystem
Native lens selection
Alpha 1 II
✓ more lensesSony E
350+
native lenses available
Alpha 9
✓ 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
Alpha 1 II
AF low-light limit
-4 EV vs -3 EV — lower is better
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
4K max frame rate
120 fps vs 30 fps — higher is better
Subject recognition
Adds Bird, Insect, Car/Train…
EVF resolution
9,437,184 vs 3,686,400 — higher is better
Codecs
Adds XAVC HS, XAVC S-I, H.265
Resolution
50.1 MP vs 24.2 MP — higher is better
Burst (mechanical)
10 fps vs 5 fps — higher is better
Reasons to choose
Alpha 9
Dimensions (W×H×D mm)
Adds 126.9, 95.6, 63
Card types
Adds SD UHS-I
ISO max (native)
51,200 vs 32,000 — higher is better
Codecs
Adds AVCHD
Battery life (CIPA)
650 shots vs 520 shots — higher is better
Weight
673 g vs 743 g — lower is better
Both cameras share
- ✓AA filter — Both support aa filter
- ✓ISO min (native) — Both 100
- ✓AF frame coverage — Both 94 %
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓RAW buffer depth — Both 200 frames
Pros & cons at a glance
Editorially curated highlights and trade-offs.
Alpha 1 II
Pros
- ✓50MP stacked sensor
- ✓30fps blackout-free burst
- ✓8K 30p video
- ✓Best Sony AF
Cons
- –Very expensive
- –Complex menus
- –Large files
Alpha 9
Pros
- ✓Stacked sensor pioneer
- ✓20fps silent burst
- ✓Pro sports AF
Cons
- –Superseded by A9 II/III
- –24MP
- –Expensive when new
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for video, Alpha 1 II or Alpha 9?
Alpha 1 II scores 9.5/10 versus 5.0/10 for Alpha 9 — 8K recording for future-proof footage.
What's the resolution difference between the Alpha 1 II and Alpha 9?
Alpha 1 II is 50.1 MP and Alpha 9 is 24.2 MP, so the Alpha 1 II captures more detail for cropping and large prints.
Do the Alpha 1 II and Alpha 9 have in-body image stabilization?
Alpha 1 II has 8.5-stop in-body image stabilization, while alpha 9 has 5-stop in-body image stabilization.
Which shoots faster bursts — the Alpha 1 II or the Alpha 9?
Alpha 1 II reaches 30 fps electronic. Alpha 9 reaches 20 fps electronic.
What's the weight difference between the Alpha 1 II and Alpha 9?
Alpha 1 II weighs 743 g and Alpha 9 weighs 673 g, so the Alpha 9 is 70 g lighter.
Do the Alpha 1 II and Alpha 9 record 4K video?
Alpha 1 II: 8K (max), 4K up to 120p. Alpha 9: 4K up to 30p.
Are the Alpha 1 II and Alpha 9 weather sealed?
Alpha 1 II: Yes. Alpha 9: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the Alpha 1 II and 650 shots for the Alpha 9, giving the Alpha 9 the edge.
How much does each cost?
Alpha 1 II launched at $6,499 and Alpha 9 at $4,499. The Alpha 9 is $2,000 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Sony press materials.