Fujifilm GFX 100S IIvs Lumix G9 IIvs Pentax K-3 Mark 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
Lumix Lumix G9 II Lumix Lumix G9 II (2023) From £1499 Best for Wildlife, sports & hybrid MFT shooters View Lumix G9 II
VS
Pentax Pentax K-3 Mark III Pentax Pentax K-3 Mark III (2021) From £1699 Best for DSLR enthusiasts & outdoor photographers View Pentax K-3 Mark 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.

Wildlife, Sports & Hybrid Mft Shooters — Lumix G9 II (2023): Phase-detect AF transforms the G9 II into a genuine MFT all-rounder — the best Lumix MFT camera for both stills and video.

Dslr Enthusiasts & Outdoor Photographers — Pentax K-3 Mark III (2021): The finest APS-C DSLR ever made — class-leading weather sealing, optical viewfinder, 5-axis IBIS, and extraordinary build for photographers committed to DSLR.

↓ 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

Lumix G9 II (2023)

  • You want the best Micro Four Thirds camera for both stills and video
  • You shoot wildlife, sports, or documentary and value the compact, lightweight MFT system
  • You're invested in the MFT lens ecosystem and want the top-tier body to go with it

Pentax K-3 Mark III (2021)

  • You're a committed DSLR photographer with significant investment in Pentax glass
  • You shoot in extreme weather conditions and place build quality and reliability above everything
  • You prefer optical viewfinder performance and want the best modern APS-C DSLR available

Quick take: The fujifilm gfx 100s ii has the highest resolution at 102mp; the lumix g9 ii is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification Fujifilm GFX 100S II (2024)Lumix G9 II (2023)Pentax K-3 Mark III (2021)
Price £4,499 £1,499 £1,699
Sensor 102MP medium-format BSI CMOS (43.8 × 32.9mm) 25.2MP Micro Four Thirds Live MOS 25.7MP APS-C BSI CMOS (AA-filterless)
Resolution 102.0MP 25.2MP 25.7MP
Video 4K/30p, 1080p/60p 5.8K/30p, 4K/120p, C4K/60p, V-Log 4K/30p, 1080p/60p
Autofocus Phase-detect AF with subject/face/eye detection Phase-detect AF with subject/face/eye detection SAFOX 13 phase-detect, 101-point (25 cross-type)
Stabilisation 8-stop IBIS 8-stop IBIS (with OIS lenses) 5.5-stop 5-axis IBIS (Shake Reduction III)
Burst Rate 7fps 25fps with AF / 75fps electronic (fixed focus) 12fps
Battery Life 460 shots (CIPA) 680 shots (CIPA) 800 shots (CIPA)
Weight 883g body only 658g body only 820g body only
Dimensions 150.0 × 104.2 × 87.2mm 134.3 × 100.3 × 90.5mm 134.5 × 103.5 × 73.5mm
Weather Sealed Yes Yes Yes
Viewfinder 0.5" OLED EVF, 5.76M dots 0.76" OLED EVF, 3.68M dots Optical pentaprism, 100% coverage, 1.05× magnification
Screen 3.2" tilting touchscreen 3.0" fully articulating touchscreen 3.2" tilting touchscreen
Mount Fujifilm GFX (G-mount) Micro Four Thirds Pentax KF-mount
Memory Cards Dual SD UHS-II Dual SD UHS-II Dual SD UHS-II
Connectivity USB-C 3.2, Wi-Fi, Bluetooth USB-C 3.1, HDMI full-size, Wi-Fi, Bluetooth USB-C, Wi-Fi, Bluetooth
⚡ Compare specs side by side Fujifilm GFX 100S II prices → Lumix G9 II prices → Pentax K-3 Mark III prices →

Compare pairs from this group