Fujifilm X-Pro3vs Pentax K-3 Mark IIIvs Ricoh GR IIIx

GearFrame · Updated March 2026

Fujifilm Fujifilm X-Pro3 Fujifilm Fujifilm X-Pro3 (2019) From £1599 Best for Street, documentary & rangefinder enthusiasts View Fujifilm X-Pro3
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
VS
Ricoh Ricoh GR IIIx Ricoh Ricoh GR IIIx (2021) From £999 Best for Street portraits & reportage View Ricoh GR IIIx

Which should you buy?

Street, Documentary & Rangefinder Enthusiasts — Fujifilm X-Pro3 (2019): The most opinionated camera Fujifilm makes — a hidden screen and hybrid OVF enforce deliberate photography, rewarding photographers who slow down.

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.

Street Portraits & Reportage — Ricoh GR IIIx (2021): APS-C in a shirt pocket with a 40mm perspective — the GR IIIx is the ideal street portrait compact for photographers who want a slightly tighter frame.

↓ Full specifications below

Fujifilm X-Pro3 (2019)

  • You shoot street or documentary photography and value a minimal shooting workflow
  • You want a rangefinder experience with modern digital image quality
  • You love Fujifilm film simulations and prioritise stills over video

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

Ricoh GR IIIx (2021)

  • You want the GR experience with a slightly tighter, more versatile field of view
  • You shoot portraits, food, or street scenes where 40mm suits better than 28mm wide
  • You want a premium compact that fits in a shirt pocket with better tonal rendering than a phone

Quick take: The fujifilm x-pro3 has the highest resolution at 26mp; the ricoh gr iiix is the most affordable; only the fujifilm x-pro3, pentax k-3 mark iii are weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification Fujifilm X-Pro3 (2019)Pentax K-3 Mark III (2021)Ricoh GR IIIx (2021)
Price £1,599 £1,699 £999
Sensor 26.1MP APS-C X-Trans CMOS IV 25.7MP APS-C BSI CMOS (AA-filterless) 24.2MP APS-C CMOS
Resolution 26.1MP 25.7MP 24.2MP
Video 4K/30p, 1080p/120p 4K/30p, 1080p/60p 1080p/60p
Autofocus Hybrid phase/contrast AF with face/eye detection SAFOX 13 phase-detect, 101-point (25 cross-type) Hybrid contrast/phase-detect AF with subject detection
Stabilisation None (lens-based only) 5.5-stop 5-axis IBIS (Shake Reduction III) 4-stop IBIS (Shake Reduction)
Burst Rate 11fps mechanical / 20fps electronic 12fps 4fps
Battery Life 440 shots (CIPA) 800 shots (CIPA) 200 shots (CIPA)
Weight 497g body only 820g body only 262g
Dimensions 140.5 × 82.8 × 46.1mm 134.5 × 103.5 × 73.5mm 111.2 × 61.4 × 33.2mm
Weather Sealed Yes Yes No
Viewfinder Hybrid OVF/EVF — 0.5" OLED, 3.69M dots Optical pentaprism, 100% coverage, 1.05× magnification None
Screen 3.0" hidden sub-LCD (opens down only) 3.2" tilting touchscreen 3.0" fixed touchscreen
Mount Fujifilm X-mount Pentax KF-mount Fixed 40mm-equiv f/2.8 lens
Memory Cards Single SD UHS-I Dual SD UHS-II Single SD UHS-I
Connectivity USB-C, Wi-Fi, Bluetooth USB-C, Wi-Fi, Bluetooth USB-C, Wi-Fi, Bluetooth
⚡ Compare specs side by side Fujifilm X-Pro3 prices → Pentax K-3 Mark III prices → Ricoh GR IIIx prices →

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