Fujifilm GFX 100S IIvs Sigma fp Lvs A6400
Fujifilm
Fujifilm GFX 100S II (2024)
From £4499
Best for Commercial, studio & landscape professionals
View Fujifilm GFX 100S II
Sigma
Sigma fp L (2021)
From £1999
Best for High-resolution creative & documentary shooters
View Sigma fp L
Which should you buy?
Commercial, Studio & Landscape Professionals — Fujifilm GFX 100S II (2024): 102MP medium-format quality in the most accessible GFX body — the best entry point to the Fujifilm GFX system.
High-Resolution Creative & Documentary Shooters — Sigma fp L (2021): 61MP and phase-detect AF in the world's smallest full-frame body — the fp L is the most capable iteration of Sigma's extraordinary compact.
Content Creation & Vlogging — A6400 (2019): The best value APS-C Sony you can buy — especially used. Real-time Eye AF at this price point was transformative when it launched and still makes it one of the most reliable autofocus systems in the lineup.
Who should buy what
Fujifilm GFX 100S II (2024)
- You need the highest resolution available outside of a Phase One system
- You shoot studio, fashion, landscape, or architecture at a professional level
- You want medium format quality without the bulk of a traditional large-format system
Sigma fp L (2021)
- You need the highest resolution available in the smallest possible full-frame mirrorless
- You shoot architecture, landscape, or commercial work where fine detail is absolutely critical
- You want the cinematic flexibility of the fp platform paired with maximum megapixel count
A6400 (2019)
- Vloggers and content creators who need a flip screen and reliable AF
- Photographers upgrading from a compact or smartphone
- Beginners who want room to grow into a full E-mount lens ecosystem
- Anyone prioritising autofocus performance at an accessible price
Quick take: The fujifilm gfx 100s ii has the highest resolution at 102mp; the a6400 is the most affordable; only the fujifilm gfx 100s ii is weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Fujifilm GFX 100S II (2024) | Sigma fp L (2021) | A6400 (2019) |
|---|---|---|---|
| Price | £4,499 | £1,999 | £899 |
| Sensor | 102MP medium-format BSI CMOS (43.8 × 32.9mm) | 61MP full-frame BSI CMOS | 24.2MP APS-C Exmor CMOS BSI |
| Resolution | 102.0MP | 61.0MP | 24.2MP |
| Video | 4K/30p, 1080p/60p | 12-bit Cinema DNG RAW, 4K/24p | 4K/30p (6K oversampled, no crop), 1080p/120p slow-motion |
| Autofocus | Phase-detect AF with subject/face/eye detection | Phase-detect AF with face/eye detection | Phase-detect, 425 points, real-time Eye AF & animal AF |
| Stabilisation | 8-stop IBIS | None (lens-based only) | None (no IBIS) |
| Burst Rate | 7fps | 18fps electronic | 11fps mechanical, 8fps with AF tracking |
| Battery Life | 460 shots (CIPA) | 200 shots (CIPA) | ~410 shots (CIPA) |
| Weight | 883g body only | 427g body only | 403g (body, battery, card) |
| Dimensions | 150.0 × 104.2 × 87.2mm | 112.6 × 69.9 × 45.3mm | 120.0 × 66.9 × 59.7mm |
| Weather Sealed | Yes | No | No |
| Viewfinder | 0.5" OLED EVF, 5.76M dots | None (optional clip-on EVF available) | EVF, 2.36M dots, 0.70× magnification |
| Screen | 3.2" tilting touchscreen | 3.15" fixed touchscreen | 3.0" tilting touchscreen, 180° flip for selfie/vlog, 921k dots |
| Mount | Fujifilm GFX (G-mount) | Leica L-mount | Sony E-mount |
| Memory Cards | Dual SD UHS-II | Single SD UHS-II | Single SD UHS-I |
| Connectivity | USB-C 3.2, Wi-Fi, Bluetooth | USB-C 3.1, Wi-Fi, Bluetooth | Micro-USB, Wi-Fi, Bluetooth, NFC |
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