Fujifilm
GFX100S II
Compact 102MP GFX medium format body with X-Processor 5, 8-stop IBIS, and updated subject detection.
$4,999
Released May 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 6 months newer.
Wins
GFX100S II
Wins
Alpha 1 II
1 categories tied
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TL;DR — Key differences
- BAlpha 1 II has higher Burst (electronic) (30 fps vs 4.1 fps)
- AGFX100S II has higher Max video bit rate (720 Mbps vs 150 Mbps)
- BAlpha 1 II has higher 4K max frame rate (120 fps vs 30 fps)
- BAlpha 1 II has higher ISO max (native) (32,000 vs 12,800)
- BAlpha 1 II has higher RAW buffer depth (200 frames vs 96 frames)
Key specs at a glance
Size and weight, to scale
GFX100S II
150 × 104 × 87 mm
883 g (1.95 lb / 31.15 oz)
Alpha 1 II
136 × 97 × 83 mm
743 g (1.64 lb / 26.21 oz)
GFX100S II is 14mm wider, 7mm taller, and 4mm thicker than Alpha 1 II.
GFX100S II is 140 g heavier than Alpha 1 II.
Depth (front-to-back): 87mm GFX100S II · 83mm Alpha 1 II
Sensor size, to scale
GFX100S II
43.8 × 32.9 mm · Medium Format
1441 mm² area
Alpha 1 II
35.9 × 24 mm · Full Frame
862 mm² area
1.7× larger sensor area = shallower depth of field and better low-light performance.
Lens ecosystem
Native lens selection
GFX100S II: mount data unavailable
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
GFX100S II
Dimensions (W×H×D mm)
Adds 150, 104.2, 87.2
Max video bit rate
720 Mbps vs 150 Mbps — higher is better
Card types
Adds SDXC V90, SSD via USB
Codecs
Adds Apple ProRes 422 HQ, Apple ProRes 422, Apple ProRes 422 LT
Resolution
102 MP vs 50.1 MP — higher is better
Subject recognition
Adds Automobile, Motorcycle/Bike, Train
ISO min (native)
80 vs 100 — lower is better
AF frame coverage
100 % vs 94 % — higher is better
Reasons to choose
Alpha 1 II
Dimensions (W×H×D mm)
Adds 136.1, 96.9, 82.9
Burst (electronic)
30 fps vs 4.1 fps — higher is better
4K max frame rate
120 fps vs 30 fps — higher is better
ISO max (native)
32,000 vs 12,800 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
RAW buffer depth
200 frames vs 96 frames — higher is better
AA filter
Only Alpha 1 II supports it
Subject recognition
Adds Human, Insect, Car/Train
Both cameras share
- ✓Eye AF — Both support eye af
- ✓Animal / bird AF — Both support animal / bird af
- ✓Internal RAW video — Both support internal raw video
- ✓In-body stabilization — Both support in-body stabilization
- ✓Weather sealing — Both support weather sealing
- ✓Card slots — Both 2
Pros & cons at a glance
Editorially curated highlights and trade-offs.
GFX100S II
Pros
- ✓102MP medium format sensor
- ✓8-stop IBIS
- ✓X-Processor 5
- ✓Compact for GFX
Cons
- –Large files
- –Premium price
- –Medium format AF not for sports
Alpha 1 II
Pros
- ✓50MP stacked sensor
- ✓30fps blackout-free burst
- ✓8K 30p video
- ✓Best Sony AF
Cons
- –Very expensive
- –Complex menus
- –Large files
Decided which one is right for you?
Compare live prices for the GFX100S II and Alpha 1 II at major authorized retailers.
Fujifilm GFX100S II
Sony Alpha 1 II
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for sports, GFX100S II or Alpha 1 II?
Alpha 1 II scores 9.0/10 versus 4.0/10 for GFX100S II — 30fps burst — pro-level action capture.
What's the resolution difference between the GFX100S II and Alpha 1 II?
GFX100S II is 102 MP and Alpha 1 II is 50.1 MP, so the GFX100S II captures more detail for cropping and large prints.
Do the GFX100S II and Alpha 1 II have in-body image stabilization?
GFX100S II has 8-stop in-body image stabilization, while alpha 1 II has 8.5-stop in-body image stabilization.
Which shoots faster bursts — the GFX100S II or the Alpha 1 II?
GFX100S II reaches 7 fps mechanical. Alpha 1 II reaches 30 fps electronic.
What's the weight difference between the GFX100S II and Alpha 1 II?
GFX100S II weighs 883 g and Alpha 1 II weighs 743 g, so the Alpha 1 II is 140 g lighter.
Do the GFX100S II and Alpha 1 II record 4K video?
GFX100S II: 4K up to 30p. Alpha 1 II: 8K (max), 4K up to 120p.
Are the GFX100S II and Alpha 1 II weather sealed?
GFX100S II: Yes. Alpha 1 II: Yes.
Which has better battery life?
Rated battery life is 530 shots (CIPA) for the GFX100S II and 520 shots for the Alpha 1 II, giving the GFX100S II the edge.
How much does each cost?
GFX100S II launched at $4,999 and Alpha 1 II at $6,499. The GFX100S II is $1,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Fujifilm and Sony press materials.