GFX 100RFvs A7S II
Fujifilm
GFX 100RF (2025)
Starting from £5199 new
Best for Landscape, travel & street photography at medium format quality
View GFX 100RF
Sony
A7S II (2015)
Starting from £799 new
Best for Low-light video, documentary & available-light filmmaking
View A7S II
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.
Low-Light Video, Documentary & Available-Light Filmmaking — A7S II (2015): A landmark in mirrorless history — the first Sony with IBIS and internal 4K, its low-light video capability still impresses today at a used-market price.
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 II (2015)
- Filmmakers and videographers who want legendary low-light performance at a used-price discount
- Documentary shooters working in unpredictable available light conditions
- A7S III shooters who want a second Sony FE body for backup or B-camera use
- Budget-conscious video producers who want full-frame 4K with S-Log at an accessible price
Quick take: The gfx 100rf has the highest resolution at 102mp; the a7s ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 100RF (2025) | A7S II (2015) |
|---|---|---|
| Price | £5,199 | £799 |
| Sensor | 102MP medium format BSI CMOS (43.8 × 32.9mm) | 12.1MP full-frame BSI Exmor CMOS |
| Resolution | 102.0MP | 12.1MP |
| Video | 4K/30p (crop), 4K/60p (crop) — F-Log2 | 4K/30p internal (full sensor readout), 1080p/120p, S-Log2/S-Log3 |
| Autofocus | Phase-detect AF with face and eye detection | 169 phase-detect + 25 contrast AF — limited by modern standards |
| Stabilisation | 8-stop IBIS | 5-axis IBIS — 4.5 stops (first Sony mirrorless with IBIS) |
| Burst Rate | 8fps electronic | 5fps continuous |
| Battery Life | ~490 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 735g body only | 584g body only |
| Dimensions | 159.0 × 90.4 × 59.0mm | 126.9 × 95.7 × 60.3mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF 0.86× 5.76M-dot — outstanding GFX viewfinder | EVF, 2.36M dots, 0.71× magnification |
| Screen | 3.2" tilting touchscreen, 2.36M dots | 3.0" tilting LCD, 1.23M dots |
| Mount | Fixed GF 35mm f/4 (28mm equivalent in 35mm terms) | Sony FE mount (full-frame E-mount) |
| Memory Cards | Single CFexpress Type B / SD UHS-II slot | Dual SD UHS-I slots |
| Connectivity | USB-C, Wi-Fi 5GHz, Bluetooth, 3.5mm mic jack | USB Micro-B, Bluetooth (via app), Wi-Fi, 3.5mm mic jack |
Suitability by genre
| Genre | GFX 100RF | A7S II |
|---|---|---|
| Landscape | — | |
| Travel | — | |
| Street | ||
| Portrait | ||
| Sports | ||
| Vlogging & Video | ||
| Low Light | — | |
| Wedding | — |
More comparisons with GFX 100RF
Camera family history