Fujifilm
GFX100
Original 102MP GFX flagship with integrated vertical grip, IBIS, phase-detect AF, and 4K video.
$9,999
Released May 2019
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
Alpha 7 IV is 2.4 years newer.
Wins
GFX100
Wins
Alpha 7 IV
4 categories tied
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TL;DR — Key differences
- BAlpha 7 IV has higher RAW buffer depth (828 frames vs 14 frames)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 12,800)
- AGFX100 has higher Resolution (102 MP vs 33 MP)
- BAlpha 7 IV has lower Weight (658 g vs 1400 g)
- BAlpha 7 IV has higher Burst (mechanical) (10 fps vs 5 fps)
Key specs at a glance
Size and weight, to scale
GFX100
156 × 164 × 103 mm
1400 g (3.09 lb / 49.38 oz)
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
GFX100 is 25mm wider, 67mm taller, and 23mm thicker than Alpha 7 IV.
GFX100 is 742 g heavier than Alpha 7 IV.
Depth (front-to-back): 103mm GFX100 · 80mm Alpha 7 IV
Sensor size, to scale
GFX100
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
GFX100: 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
GFX100
Dimensions (W×H×D mm)
Adds 156.2, 163.6, 102.9
Resolution
102 MP vs 33 MP — higher is better
Subject recognition
Adds Face, Eye
EVF resolution
5,760,000 vs 3,686,400 — higher is better
Battery life (CIPA)
800 shots vs 580 shots — higher is better
EVF magnification
0.86 × vs 0.78 × — higher is better
AF frame coverage
100 % vs 94 % — higher is better
Reasons to choose
Alpha 7 IV
AF low-light limit
-4 EV vs -3 EV — lower is better
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
RAW buffer depth
828 frames vs 14 frames — higher is better
Subject recognition
Adds Animal, Bird, Insect…
ISO max (native)
51,200 vs 12,800 — higher is better
Codecs
Adds XAVC HS, XAVC S, XAVC S-I
Weight
658 g vs 1400 g — lower is better
AA filter
Only Alpha 7 IV supports it
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓In-body stabilization — Both support in-body stabilization
- ✓IBIS effectiveness — Both 5.5 stops
- ✓Weather sealing — Both support weather sealing
- ✓Card slots — Both 2
Pros & cons at a glance
Editorially curated highlights and trade-offs.
GFX100
Pros
- ✓102MP medium format sensor
- ✓Built-in vertical grip
- ✓IBIS
- ✓4K video
Cons
- –Very large body
- –Expensive
- –Older AF generation
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
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, GFX100 or Alpha 7 IV?
Alpha 7 IV scores 8.0/10 versus 1.5/10 for GFX100 — Bird AF subject recognition.
What's the resolution difference between the GFX100 and Alpha 7 IV?
GFX100 is 102 MP and Alpha 7 IV is 33 MP, so the GFX100 captures more detail for cropping and large prints.
Do the GFX100 and Alpha 7 IV have in-body image stabilization?
GFX100 has 5.5-stop in-body image stabilization, while alpha 7 IV has 5.5-stop in-body image stabilization.
Which shoots faster bursts — the GFX100 or the Alpha 7 IV?
GFX100 reaches 5 fps electronic. Alpha 7 IV reaches 10 fps electronic.
What's the weight difference between the GFX100 and Alpha 7 IV?
GFX100 weighs 1400 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 742 g lighter.
Do the GFX100 and Alpha 7 IV record 4K video?
GFX100: 4K up to 30p. Alpha 7 IV: 4K up to 60p.
Are the GFX100 and Alpha 7 IV weather sealed?
GFX100: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 800 shots (CIPA) for the GFX100 and 580 shots for the Alpha 7 IV, giving the GFX100 the edge.
How much does each cost?
GFX100 launched at $9,999 and Alpha 7 IV at $2,499. The Alpha 7 IV is $7,500 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Fujifilm and Sony press materials.