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GFX 100RFvs A7S III

GearFrame · Updated March 2026

Fujifilm GFX 100RF Fujifilm GFX 100RF (2025) Starting from £5199 new Best for Landscape, travel & street photography at medium format quality View GFX 100RF
VS
Sony A7S III 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.

↓ Full specifications below

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
Genre GFX 100RFA7S III
Landscape
9.0
Travel
9.0
7.0
Street
9.0
9.0
Portrait
7.0
7.0
Sports
4.0
Vlogging & Video
4.0
Video
9.0
Wildlife
9.0

GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →

⚡ Compare specs side by side GFX 100RF prices → A7S III prices →

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