Fujifilm GFX 100S IIvs OM-5vs A7 III

GearFrame · Updated March 2026

Fujifilm Fujifilm GFX 100S II Fujifilm Fujifilm GFX 100S II (2024) From £4499 Best for Commercial, studio & landscape professionals View Fujifilm GFX 100S II
VS
OM System OM-5 OM System OM-5 (2022) From £899 Best for Outdoor & adventure View OM-5
VS
Sony A7 III Sony A7 III (2018) From £1699 Best for All-round photography & video View A7 III

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.

Outdoor & Adventure — OM-5 (2022): The toughest camera at this price — IP53 weather sealing and 7.5-stop IBIS built for adventure photographers.

All-Round Photography & Video — A7 III (2018): Still one of the best all-round cameras money can buy — particularly strong used. The A7 III proved that full-frame doesn't have to mean compromises, and nothing at this price point has meaningfully beaten it.

↓ Full specifications below

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

OM-5 (2022)

  • You need weather sealing and in-body stabilisation in a compact, lightweight body
  • You hike, travel, or shoot outdoors and want serious protection without the weight penalty
  • You're in the MFT ecosystem and want a step up in capability from entry-level bodies

A7 III (2018)

  • Enthusiast photographers upgrading from APS-C for the first time
  • Working photographers who need reliable AF and weather sealing
  • Anyone who shoots in low light regularly
  • Hybrid shooters needing both stills and video performance

Quick take: The fujifilm gfx 100s ii has the highest resolution at 102mp; the om-5 is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification Fujifilm GFX 100S II (2024)OM-5 (2022)A7 III (2018)
Price £4,499 £899 £1,699
Sensor 102MP medium-format BSI CMOS (43.8 × 32.9mm) 20.4MP Micro Four Thirds Live MOS 24.2MP Full-Frame Exmor R BSI CMOS
Resolution 102.0MP 20.4MP 24.2MP
Video 4K/30p, 1080p/60p 4K/60p, 4K/120p Cinema4K 4K/30p (6K oversampled), 1080p/120p slow-motion
Autofocus Phase-detect AF with subject/face/eye detection Phase-detect, 121 all-cross points, subject tracking Phase-detect, 693 points, real-time Eye AF & animal AF
Stabilisation 8-stop IBIS 5-axis IBIS, 7.5 stops (Dual IS with compatible lenses) 5-axis IBIS, 5 stops
Burst Rate 7fps 30fps electronic, 10fps mechanical 10fps with AF/AE tracking
Battery Life 460 shots (CIPA) ~370 shots (CIPA) ~710 shots (CIPA)
Weight 883g body only 414g body only 565g (body, battery, card)
Dimensions 150.0 × 104.2 × 87.2mm 122.3 × 87.6 × 49.7mm 126.9 × 95.6 × 73.7mm
Weather Sealed Yes Yes Yes
Viewfinder 0.5" OLED EVF, 5.76M dots EVF, 2.36M dots, 0.74× magnification EVF, 2.36M dots, 0.78× magnification
Screen 3.2" tilting touchscreen 3.0" fully articulating touchscreen 3.0" tilting touchscreen, 921k dots
Mount Fujifilm GFX (G-mount) Micro Four Thirds Sony E-mount
Memory Cards Dual SD UHS-II Dual SD UHS-II slots Dual SD (UHS-II slot 1, UHS-I slot 2)
Connectivity USB-C 3.2, Wi-Fi, Bluetooth USB-C, Bluetooth, Wi-Fi USB-C (USB 3.2), Wi-Fi, Bluetooth, NFC
⚡ Compare specs side by side Fujifilm GFX 100S II prices → OM-5 prices → A7 III prices →

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