GFX 100RFvs A7S III
Fujifilm
GFX 100RF (2025)
Starting from £5199 new
Best for Landscape, travel & street photography at medium format quality
View GFX 100RF
Sony
A7S III (2020)
Starting from £2999 new
Best for Professional video & low-light filmmaking
View A7S III
GearScore™ Verdict — Which should you buy?
Landscape, Travel & Street Photography At Medium Format Quality — GFX 100RF (2025): The world's first medium format compact — 102MP, 28mm, and all 20 Fujifilm film simulations in a fixed-lens body.
Professional Video & Low-Light Filmmaking — A7S III (2020): If video is your primary discipline, the A7S III is the camera. 4K/120p at 10-bit in a weather-sealed body with a 9.44M dot EVF is an extraordinary package. The 12MP sensor isn't limiting for video — and it's usable at ISO 409,600 in a pinch.
Who should buy what
GFX 100RF (2025)
- Landscape photographers who want medium format resolution without a system of interchangeable lenses
- Leica Q3 owners who want a step up in resolution to 102MP medium format
- Fujifilm GFX users who want a compact fixed-lens body for travel alongside their system lenses
- Photographers who want the ultimate image quality in a jacket-pocketable form factor
A7S III (2020)
- Filmmakers and videographers who need 4K/120p at 10-bit
- Event videographers who shoot in dark venues regularly
- Documentary filmmakers who need reliable AF and weather sealing
- Hybrid shooters where video is primary and stills are secondary
Quick take: The gfx 100rf has the highest resolution at 102mp; the a7s iii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 100RF (2025) | A7S III (2020) |
|---|---|---|
| Price | £5,199 | £2,999 |
| Sensor | 102MP medium format BSI CMOS (43.8 × 32.9mm) | 12.1MP Full-Frame BSI CMOS (12-bit, back-illuminated) |
| Resolution | 102.0MP | 12.1MP |
| Video | 4K/30p (crop), 4K/60p (crop) — F-Log2 | 4K/120p 10-bit, 4K/60p 10-bit S-Cinetone/S-Log3, 1080p/240p |
| Autofocus | Phase-detect AF with face and eye detection | Phase-detect, 759 points, real-time Eye AF (human & animal), subject recognition |
| Stabilisation | 8-stop IBIS | 5.5-stop IBIS |
| Burst Rate | 8fps electronic | 10fps mechanical |
| Battery Life | ~490 shots (CIPA) | ~600 shots (CIPA) / ~70min continuous 4K recording |
| Weight | 735g body only | 699g (body, battery, card) |
| Dimensions | 159.0 × 90.4 × 59.0mm | 128.9 × 96.9 × 80.8mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.86× 5.76M-dot — outstanding GFX viewfinder | OLED EVF, 9.44M dots, 0.90× magnification — best EVF Sony has made |
| Screen | 3.2" tilting touchscreen, 2.36M dots | 3.0" vari-angle touchscreen, 1.44M dots |
| Mount | Fixed GF 35mm f/4 (28mm equivalent in 35mm terms) | Sony E-mount |
| Memory Cards | Single CFexpress Type B / SD UHS-II slot | Dual CFexpress Type A / SD UHS-II (both slots) |
| Connectivity | USB-C, Wi-Fi 5GHz, Bluetooth, 3.5mm mic jack | USB-C (USB 3.2 Gen 2), full-size HDMI, Wi-Fi 6, Bluetooth |
Suitability by genre
| Genre | GFX 100RF | A7S III |
|---|---|---|
| Landscape | — | |
| Travel | ||
| Street | ||
| Portrait | ||
| Sports | — | |
| Vlogging & Video | — | |
| Video | — | |
| Wildlife | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
More comparisons with GFX 100RF
Camera family history