GFX 100vs A7S
Fujifilm
GFX 100 (2019)
Starting from £4999 new
Best for Commercial, studio & landscape photography
View GFX 100
GearScore™ Verdict — Which should you buy?
Commercial, Studio & Landscape Photography — GFX 100 (2019): The world's first 100MP mirrorless with IBIS and phase-detect AF — the GFX 100 was a landmark in medium format, but its size and weight are professional-grade.
Astrophotography & Low-Light — A7S (2014): The original A7S pioneered the concept of a camera optimised entirely for low light. Its 12.2MP sensor has enormous photosites — extraordinary high-ISO performance that still holds up. Lacking IBIS and limited to 1080p internally (4K requires external recorder), it is a specialist tool. For astrophotography, event videography, or any scenario where light is genuinely scarce, it remains outstanding.
Who should buy what
GFX 100 (2019)
- Commercial and advertising photographers who need extraordinary resolution
- Landscape photographers willing to carry a large body for maximum detail
- GFX system users who want the original 100MP body at a lower cost than GFX 100S
- Studio photographers who want the finest image quality the GFX system can offer
A7S (2014)
- Astrophotographers
- Low-light event videographers
- Filmmakers needing clean high-ISO footage
Quick take: The gfx 100 has the highest resolution at 102mp; the a7s is the most affordable. Scroll down for the full spec breakdown.
Full specifications
| Specification | GFX 100 (2019) | A7S (2014) |
|---|---|---|
| Price | £4,999 | £600 |
| Sensor | 102MP Medium Format BSI CMOS (43.8 × 32.9mm) | 12.2MP Full-Frame BSI CMOS |
| Resolution | 102.0MP | 12.2MP |
| Video | 4K/30p, FHD/120p; F-Log support | 1080p/60p internal, 4K via HDMI (external recorder) |
| Autofocus | Phase-detect hybrid AF (first GFX with phase-detect), face/eye detection | Phase-detect / contrast-detect hybrid AF |
| Stabilisation | IBIS — up to 5.5 stops | None |
| Burst Rate | 5fps | 5fps |
| Battery Life | ~800 shots (CIPA, dual NP-T125 batteries in integrated grip) | ~370 shots (CIPA) |
| Weight | 1,400g (with battery and card) | 474g (with battery and card) |
| Dimensions | 156.2 × 163.6 × 102.9mm | 126.9 × 94.4 × 48.2mm |
| Weather Sealed | Yes | Yes |
| Viewfinder | EVF, 5.76M dots, 0.77× magnification | Electronic, 2.36M dots, 0.71× magnification |
| Screen | 3.2" fully articulating touchscreen | 3.0" tilting LCD, 1.23M dots |
| Mount | Fujifilm GFX (G-mount) | Sony FE (full-frame E-mount) |
| Memory Cards | Dual SD UHS-II slots | Single SD / MemoryStick PRO Duo slot |
| Connectivity | USB-C, Wi-Fi, Bluetooth, 3.5mm mic, headphone jack, HDMI | Multi/Micro USB, Wi-Fi, NFC |
Suitability by genre
| Genre | GFX 100 | A7S |
|---|---|---|
| Portrait | ||
| Landscape | ||
| Architecture | — | |
| Travel | ||
| Sports & Action | ||
| Vlogging & Video | ||
| Astrophotography | — | |
| Street | — |
GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →
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