Fujifilm GFX 100S IIvs X-A7vs OM System OM-1 Mark II
Fujifilm
Fujifilm GFX 100S II (2024)
From £4499
Best for Commercial, studio & landscape professionals
View Fujifilm GFX 100S II
OM System
OM System OM-1 Mark II (2024)
From £1999
Best for Wildlife, birds & outdoor sports
View OM System OM-1 Mark II
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.
Beginner Fujifilm — X-A7 (2019): The most affordable X-mount entry — Fujifilm colour and film simulations with a large flip screen for beginners.
Wildlife, Birds & Outdoor Sports — OM System OM-1 Mark II (2024): OM System's most capable camera — 120fps AF burst, AI subject detection, and IP53 weather sealing make it the best-value pro wildlife camera.
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
X-A7 (2019)
- You want an affordable first mirrorless with decent video capabilities
- You shoot a lot of selfie-style content or vlog on a budget
- Note: no viewfinder and limited lens support — the X-T30 II is a better long-term investment
OM System OM-1 Mark II (2024)
- You shoot wildlife, birds in flight, or fast-moving action where tracking accuracy is critical
- You need extreme weather sealing for shooting in rain, dust, mud, or freezing cold
- You're invested in the MFT ecosystem and want the absolute best body available
Quick take: The fujifilm gfx 100s ii has the highest resolution at 102mp; the x-a7 is the most affordable; only the fujifilm gfx 100s ii, om system om-1 mark ii are weather sealed. Scroll down for the full spec breakdown.
Full specifications
| Specification | Fujifilm GFX 100S II (2024) | X-A7 (2019) | OM System OM-1 Mark II (2024) |
|---|---|---|---|
| Price | £4,499 | £399 | £1,999 |
| Sensor | 102MP medium-format BSI CMOS (43.8 × 32.9mm) | 24.2MP APS-C CMOS (Bayer, not X-Trans) | 20MP Micro Four Thirds Live MOS |
| Resolution | 102.0MP | 24.2MP | 20.0MP |
| Video | 4K/30p, 1080p/60p | 4K/30p, 1080p/60p | 4K/60p, 1080p/240p, 4K HLG |
| Autofocus | Phase-detect AF with subject/face/eye detection | Phase-detect + contrast, 425 points | AI subject detection AF (birds, animals, motorsport) |
| Stabilisation | 8-stop IBIS | None (no IBIS) | 8.5-stop IBIS |
| Burst Rate | 7fps | 6fps | 120fps with AF tracking |
| Battery Life | 460 shots (CIPA) | ~440 shots (CIPA) | 520 shots (CIPA) |
| Weight | 883g body only | 320g body only | 599g body only |
| Dimensions | 150.0 × 104.2 × 87.2mm | 118.0 × 80.6 × 55.2mm | 134.8 × 91.6 × 72.7mm |
| Weather Sealed | Yes | No | Yes |
| Viewfinder | 0.5" OLED EVF, 5.76M dots | None | 0.83" OLED EVF, 5.76M dots, 120fps |
| Screen | 3.2" tilting touchscreen | 3.5" fully articulating touchscreen | 3.0" fully articulating touchscreen |
| Mount | Fujifilm GFX (G-mount) | Fujifilm X-mount | Micro Four Thirds |
| Memory Cards | Dual SD UHS-II | Single SD UHS-I slot | Dual SD UHS-II |
| Connectivity | USB-C 3.2, Wi-Fi, Bluetooth | USB Micro-B, Bluetooth, Wi-Fi, micro HDMI | USB-C, Wi-Fi, Bluetooth |
Compare pairs from this group