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 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
GFX100S II is 2.6 years newer.
Wins
GFX100S II
Wins
Alpha 7 IV
2 categories tied
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TL;DR — Key differences
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 96 frames)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 12,800)
- AGFX100S II has higher Resolution (102 MP vs 33 MP)
- BAlpha 7 IV has higher Burst (electronic) (10 fps vs 4.1 fps)
- BAlpha 7 IV has higher 4K max frame rate (60 fps vs 30 fps)
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 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
GFX100S II is 19mm wider, 8mm taller, and 7mm thicker than Alpha 7 IV.
GFX100S II is 225 g heavier than Alpha 7 IV.
Depth (front-to-back): 87mm GFX100S II · 80mm Alpha 7 IV
Sensor size, to scale
GFX100S II
43.8 × 32.9 mm · Medium Format
1441 mm² area
Alpha 7 IV
35.9 × 23.9 mm · Full Frame
858 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 7 IV
✓ 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
Resolution
102 MP vs 33 MP — higher is better
Card types
Adds SDXC V90, SSD via USB
Codecs
Adds Apple ProRes 422 HQ, Apple ProRes 422, Apple ProRes 422 LT
Subject recognition
Adds Automobile, Motorcycle/Bike, Train
EVF resolution
5,760,000 vs 3,686,400 — higher is better
IBIS effectiveness
8 stops vs 5.5 stops — higher is better
ISO min (native)
80 vs 100 — lower is better
Reasons to choose
Alpha 7 IV
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
RAW buffer depth
828 frames vs 96 frames — higher is better
ISO max (native)
51,200 vs 12,800 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Burst (electronic)
10 fps vs 4.1 fps — higher is better
AA filter
Only Alpha 7 IV supports it
Subject recognition
Adds Human, Insect, Car/Train
4K max frame rate
60 fps vs 30 fps — higher is better
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 7 IV
Pros
- ✓33MP — more detail for cropping and print
- ✓10-bit 4K 60p (Super35 crop) / 4K 30p full-frame
- ✓Full-size HDMI port
- ✓759 phase-detect AF points
Cons
- –4K 60p requires Super35 crop
- –10fps burst lags behind R6 II at 40fps
- –Complex menu system
Decided which one is right for you?
Compare live prices for the GFX100S II and Alpha 7 IV at major authorized retailers.
Fujifilm GFX100S II
Sony Alpha 7 IV
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for vlogging, GFX100S II or Alpha 7 IV?
Alpha 7 IV scores 8.0/10 versus 4.5/10 for GFX100S II — Fully articulating screen — see yourself while filming.
What's the resolution difference between the GFX100S II and Alpha 7 IV?
GFX100S II is 102 MP and Alpha 7 IV is 33 MP, so the GFX100S II captures more detail for cropping and large prints.
Do the GFX100S II and Alpha 7 IV have in-body image stabilization?
GFX100S II has 8-stop in-body image stabilization, while alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the GFX100S II or the Alpha 7 IV?
GFX100S II reaches 7 fps mechanical. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the GFX100S II and Alpha 7 IV?
GFX100S II weighs 883 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 225 g lighter.
Do the GFX100S II and Alpha 7 IV record 4K video?
GFX100S II: 4K up to 30p. Alpha 7 IV: 4K up to 60p.
Are the GFX100S II and Alpha 7 IV weather sealed?
GFX100S II: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 530 shots (CIPA) for the GFX100S II and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
GFX100S II launched at $4,999 and Alpha 7 IV at $2,499. The Alpha 7 IV is $2,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Fujifilm and Sony press materials.