Fujifilm
GFX100S
102MP medium format in a more compact GFX body.
$5,999
Launch priceReleased Jan 2021
Sony
Alpha 7R VI
66.8MP stacked full-frame high-resolution body with 30fps bursts, 8K 30p, 4K 120p, and Sony's AI processing unit.
$4,499
Launch priceReleased Jun 2026
Alpha 7R VI is 5.3 years newer.
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Wins
GFX100S
Wins
Alpha 7R VI
2 categories tied
Which would you choose?
TL;DR — Key differences
- BAlpha 7R VI has higher Burst (electronic) (30 fps vs 2.9 fps)
- BAlpha 7R VI has higher RAW buffer depth (150 frames vs 23 frames)
- BAlpha 7R VI has higher 4K max frame rate (120 fps vs 30 fps)
- BAlpha 7R VI has higher EVF resolution (9,437,184 vs 3,690,000)
- BAlpha 7R VI has higher ISO max (native) (32,000 vs 12,800)
Key specs at a glance
Size and weight, to scale
📸 Snap this size diff to shareGFX100S
150 × 104 × 87 mm
900 g (1.98 lb / 31.75 oz)
Credit card
85.6 × 54 mm
for scale
Alpha 7R VI
133 × 97 × 83 mm
713 g (1.57 lb / 25.15 oz)
GFX100S is 17mm wider, 7mm taller, and 4mm thicker than Alpha 7R VI.
GFX100S is 187 g heavier than Alpha 7R VI.
Depth (front-to-back): 87mm GFX100S · 83mm Alpha 7R VI
Back view, to scale
Width × Height — same proportions as the front of the body.
GFX100S
150 × 104 mm
Credit card
85.6 × 54 mm
Alpha 7R VI
133 × 97 mm
Top view, to scale
Width × Depth (front-to-back) — see which body is chunkier on the table.
GFX100S
150 × 87 mm
Credit card
85.6 × 54 mm
Alpha 7R VI
133 × 83 mm
Sensor size, to scale
GFX100S
43.8 × 32.9 mm · Medium Format
1441 mm² area
Alpha 7R VI
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: mount data unavailable
Alpha 7R VI
✓ 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
Dimensions (W×H×D mm)
Adds 150, 104.2, 87.2
Card types
Adds SD UHS-II, SDXC V90
Weather sealing
Only GFX100S supports it
Resolution
102 MP vs 66.8 MP — higher is better
Reasons to choose
Alpha 7R VI
Subject recognition
Adds Human, Animal, Bird…
Dimensions (W×H×D mm)
Adds 132.7, 96.9, 82.9
Card types
Adds CFexpress Type A, SDXC UHS-II
Burst (electronic)
30 fps vs 2.9 fps — higher is better
RAW buffer depth
150 frames vs 23 frames — higher is better
4K max frame rate
120 fps vs 30 fps — higher is better
EVF resolution
9,437,184 vs 3,690,000 — higher is better
ISO max (native)
32,000 vs 12,800 — higher is better
Both cameras share
- ✓ISO min (native) — Both 100
- ✓Eye AF — Both support eye af
- ✓In-body stabilization (IBIS) — Both support in-body stabilization (ibis)
- ✓Card slots — Both 2
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
GFX100S
Pros
- ✓102MP
- ✓IBIS
- ✓Medium format quality
Cons
- –Price
- –Slow AF
- –Huge files
Alpha 7R VI
Pros
- ✓66.8MP stacked full-frame sensor
- ✓30fps blackout-free electronic burst
- ✓8K 30p and 4K 120p video
- ✓5-axis sensor-shift stabilization
- ✓9.44M-dot HDR OLED EVF
Cons
- –Very expensive
- –Large files demand fast cards and storage
- –8K workflow can be heavy
Decided which one is right for you?
Compare live prices for the GFX100S and Alpha 7R VI at major authorized retailers.
Fujifilm GFX100S
Sony Alpha 7R VI
Affiliate disclosure: As an Amazon Associate, Cameraegg earns from qualifying purchases. Cameraegg may also earn commission from B&H links, at no extra cost to you.
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for wildlife, GFX100S or Alpha 7R VI?
Alpha 7R VI scores 6.5/10 versus 1.5/10 for GFX100S — 30fps burst captures fleeting moments.
What's the resolution difference between the GFX100S and Alpha 7R VI?
GFX100S is 102 MP and Alpha 7R VI is 66.8 MP, so the GFX100S captures more detail for cropping and large prints.
Do the GFX100S and Alpha 7R VI have in-body image stabilization?
GFX100S has 6-stop in-body image stabilization, while Alpha 7R VI has in-body image stabilization.
Which shoots faster bursts — the GFX100S or the Alpha 7R VI?
GFX100S reaches 5 fps mechanical. Alpha 7R VI reaches 30 fps electronic.
What's the weight difference between the GFX100S and Alpha 7R VI?
GFX100S weighs 900 g and Alpha 7R VI weighs 713 g, so the Alpha 7R VI is 187 g lighter.
Do the GFX100S and Alpha 7R VI record 4K video?
GFX100S: 4K up to 30p. Alpha 7R VI: 8K (max), 4K up to 120p.
Are the GFX100S and Alpha 7R VI weather sealed?
GFX100S: Yes. Alpha 7R VI: No.
Which has better battery life?
Rated battery life is 460 shots (CIPA) for the GFX100S and 600 shots for the Alpha 7R VI, giving the Alpha 7R VI the edge.
How much does each cost?
GFX100S launched at $5,999 and Alpha 7R VI at $4,499. The Alpha 7R VI is $1,500 less.
Can't decide between two? Compare a third camera.
Add any camera to get a three-way GFX100S vs Alpha 7R VI vs X comparison.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed July 2026.
Product images courtesy of Fujifilm and Sony press materials.