GFX 50S IIvs A7S II
Fujifilm
GFX 50S II (2021)
Starting from £2999 new
Best for Studio & portrait specialists
View GFX 50S II
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?
Studio & Portrait Specialists — GFX 50S II (2021): Medium format quality at the most accessible price ever — 51MP detail and tonal richness no APS-C or full-frame body can replicate.
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 50S II (2021)
- Photographers stepping into medium format for the first time
- Landscape and commercial shooters who want 51MP at an accessible medium-format price
- Studio photographers upgrading from full-frame who want a resolution jump
- GFX system buyers who want IBIS and medium-format quality without GFX 100S II pricing
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 50s ii has the highest resolution at 51mp; the a7s ii is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 50S II (2021) | A7S II (2015) |
|---|---|---|
| Price | £2,999 | £799 |
| Sensor | 51.4MP Medium Format GFX 44×33mm BSI CMOS | 12.1MP full-frame BSI Exmor CMOS |
| Resolution | 51.4MP | 12.1MP |
| Video | 4K/30p (cropped) | 4K/30p internal (full sensor readout), 1080p/120p, S-Log2/S-Log3 |
| Autofocus | Phase-detect, 425 points | 169 phase-detect + 25 contrast AF — limited by modern standards |
| Stabilisation | 5-axis IBIS, 6.5 stops | 5-axis IBIS — 4.5 stops (first Sony mirrorless with IBIS) |
| Burst Rate | 3fps | 5fps continuous |
| Battery Life | ~440 shots (CIPA) | ~370 shots (CIPA) |
| Weight | 900g body only | 584g body only |
| Dimensions | 150.0 × 104.2 × 87.2mm | 126.9 × 95.7 × 60.3mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 3.69M dots, 0.77× magnification | EVF, 2.36M dots, 0.71× magnification |
| Screen | 3.2" tilting touchscreen | 3.0" tilting LCD, 1.23M dots |
| Mount | Fujifilm G-mount (medium format) | Sony FE mount (full-frame E-mount) |
| Memory Cards | Dual SD UHS-II slots | Dual SD UHS-I slots |
| Connectivity | USB-C, Bluetooth, Wi-Fi | USB Micro-B, Bluetooth (via app), Wi-Fi, 3.5mm mic jack |
Suitability by genre
| Genre | GFX 50S II | A7S II |
|---|---|---|
| Studio Portraits | — | |
| Commercial | — | |
| Landscape | — | |
| Portrait | ||
| Travel | — | |
| Sports & Action | — | |
| Vlogging & Video | — | |
| Low Light | — | |
| Wedding | — | |
| Street | — | |
| Sports | — |
More comparisons with GFX 50S II
Camera family history