Fujifilm
GFX ETERNA 55
G-mount large-format cinema camera with a 102MP GFX sensor, 8K recording, variable ND, 12G-SDI, and pro I/O.
$16,499
Released Sep 2025
Sony
Alpha 7 IV
33MP hybrid all-rounder with 10-bit 4K 60p and AI-powered subject tracking.
$2,499
Released Oct 2021
GFX ETERNA 55 is 3.9 years newer.
Wins
GFX ETERNA 55
Wins
Alpha 7 IV
1 categories tied
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TL;DR — Key differences
- BAlpha 7 IV has higher IBIS effectiveness (5.5 stops vs 0 stops)
- BAlpha 7 IV has lower ISO min (native) (100 vs 400)
- BAlpha 7 IV has higher ISO max (native) (51,200 vs 12,800)
- AGFX ETERNA 55 has higher Resolution (102 MP vs 33 MP)
- BAlpha 7 IV has lower Weight (658 g vs 2000 g)
Key specs at a glance
Size and weight, to scale
GFX ETERNA 55
111 × 138 × 177 mm
2000 g (4.41 lb / 70.55 oz)
Alpha 7 IV
131 × 96 × 80 mm
658 g (1.45 lb / 23.21 oz)
GFX ETERNA 55 is 21mm narrower than Alpha 7 IV but it is also 42mm taller and 97mm thicker.
GFX ETERNA 55 is 1342 g heavier than Alpha 7 IV.
Depth (front-to-back): 177mm GFX ETERNA 55 · 80mm Alpha 7 IV
Sensor size, to scale
GFX ETERNA 55
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
GFX ETERNA 55: 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
GFX ETERNA 55
Dimensions (W×H×D mm)
Adds 110.8, 138.2, 176.8
Codecs
Adds Apple ProRes 422 HQ, Apple ProRes 422, Apple ProRes 422 LT
Resolution
102 MP vs 33 MP — higher is better
Card types
Adds CFexpress Type B, SSD via USB
Subject recognition
Adds Face, Automobile, Motorcycle/Bike…
Card slots
3 vs 2 — higher is better
Max video bit rate
720 Mbps vs 600 Mbps — higher is better
AF frame coverage
100 % vs 94 % — higher is better
Reasons to choose
Alpha 7 IV
IBIS effectiveness
5.5 stops vs 0 stops — higher is better
Dimensions (W×H×D mm)
Adds 131.3, 96.4, 79.8
Codecs
Adds XAVC HS, XAVC S, XAVC S-I…
ISO min (native)
100 vs 400 — lower is better
ISO max (native)
51,200 vs 12,800 — higher is better
Weight
658 g vs 2000 g — lower is better
AA filter
Only Alpha 7 IV 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
- ✓4K max frame rate — Both 60 fps
- ✓Weather sealing — Both support weather sealing
- ✓Touchscreen — Both support touchscreen
- ✓Wi-Fi — Both support wi-fi
Pros & cons at a glance
Editorially curated highlights and trade-offs.
GFX ETERNA 55
Pros
- ✓Large-format 8K cinema capture
- ✓Electronic variable ND
- ✓12G-SDI and GenLock
- ✓F-Log2 / F-Log2 C
Cons
- –Cinema-only body
- –Very expensive
- –Large and heavy
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 GFX ETERNA 55 and Alpha 7 IV at major authorized retailers.
Fujifilm GFX ETERNA 55
Sony Alpha 7 IV
Full specifications
✓ = category winner
Frequently asked
Quick answers generated from verified specs.
Which is better for portraits, GFX ETERNA 55 or Alpha 7 IV?
Alpha 7 IV scores 9.0/10 versus 5.0/10 for GFX ETERNA 55 — 33MP — ample resolution for portraits.
What's the resolution difference between the GFX ETERNA 55 and Alpha 7 IV?
GFX ETERNA 55 is 102 MP and Alpha 7 IV is 33 MP, so the GFX ETERNA 55 captures more detail for cropping and large prints.
Do the GFX ETERNA 55 and Alpha 7 IV have in-body image stabilization?
GFX ETERNA 55 does not have IBIS, while alpha 7 IV has 5.5-stop in-body image stabilization.
What's the weight difference between the GFX ETERNA 55 and Alpha 7 IV?
GFX ETERNA 55 weighs 2000 g and Alpha 7 IV weighs 658 g, so the Alpha 7 IV is 1342 g lighter.
Do the GFX ETERNA 55 and Alpha 7 IV record 4K video?
GFX ETERNA 55: 8K (max), 4K up to 60p. Alpha 7 IV: 4K up to 60p.
Are the GFX ETERNA 55 and Alpha 7 IV weather sealed?
GFX ETERNA 55: Yes. Alpha 7 IV: Yes.
Which has better battery life?
Rated battery life is 520 shots (CIPA) for the GFX ETERNA 55 and 580 shots for the Alpha 7 IV, giving the Alpha 7 IV the edge.
How much does each cost?
GFX ETERNA 55 launched at $16,499 and Alpha 7 IV at $2,499. The Alpha 7 IV is $14,000 less.
Specs sourced from manufacturer data. Use-case scores algorithmically derived. Last reviewed May 2026.
Product images courtesy of Fujifilm and Sony press materials.