Fujifilm X-Pro3vs Lumix S5vs Pentax K-3 Mark III

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
Lumix Lumix S5 Lumix Lumix S5 (2020) From £1699 Best for Professional video & hybrid shooting View Lumix S5
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?

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.

Professional Video & Hybrid Shooting — Lumix S5 (2020): The S5 is an outstanding video camera that also takes excellent stills. 10-bit 4K/60p, dual native ISO and 6.5-stop IBIS in a weather-sealed body is a compelling package. The contrast-detect AF is its main weakness vs Sony and Canon — but for controlled shooting it doesn't hold it back.

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 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

Lumix S5 (2020)

  • Videographers who need 10-bit colour science in a full-frame body
  • Photographers who shoot video as a second discipline
  • Studio photographers who want full-frame IBIS at a lower price
  • L-mount system users building a versatile kit

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 x-pro3 has the highest resolution at 26mp; the fujifilm x-pro3 is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification Fujifilm X-Pro3 (2019)Lumix S5 (2020)Pentax K-3 Mark III (2021)
Price £1,599 £1,699 £1,699
Sensor 26.1MP APS-C X-Trans CMOS IV 24.2MP Full-Frame CMOS 25.7MP APS-C BSI CMOS (AA-filterless)
Resolution 26.1MP 24.2MP 25.7MP
Video 4K/30p, 1080p/120p 4K/60p 10-bit V-Log/HLG, 5.9K anamorphic, 1080p/180p slow-motion 4K/30p, 1080p/60p
Autofocus Hybrid phase/contrast AF with face/eye detection Contrast AF (DFD Technology), face/eye detection SAFOX 13 phase-detect, 101-point (25 cross-type)
Stabilisation None (lens-based only) 6.5-stop IBIS (dual IBIS with Lumix S lenses) 5.5-stop 5-axis IBIS (Shake Reduction III)
Burst Rate 11fps mechanical / 20fps electronic 7fps mechanical, 9fps electronic (AFS) 12fps
Battery Life 440 shots (CIPA) ~470 shots (CIPA) 800 shots (CIPA)
Weight 497g body only 714g (body, battery, card) 820g body only
Dimensions 140.5 × 82.8 × 46.1mm 132.6 × 97.1 × 81.9mm 134.5 × 103.5 × 73.5mm
Weather Sealed Yes Yes Yes
Viewfinder Hybrid OVF/EVF — 0.5" OLED, 3.69M dots EVF, 2.36M dots, 0.78× magnification Optical pentaprism, 100% coverage, 1.05× magnification
Screen 3.0" hidden sub-LCD (opens down only) 3.0" vari-angle touchscreen, 1.84M dots 3.2" tilting touchscreen
Mount Fujifilm X-mount Leica L-mount Pentax KF-mount
Memory Cards Single SD UHS-I Dual SD UHS-II Dual SD UHS-II
Connectivity USB-C, Wi-Fi, Bluetooth USB-C (USB 3.2 Gen 1), full-size HDMI, Wi-Fi, Bluetooth USB-C, Wi-Fi, Bluetooth
⚡ Compare specs side by side Fujifilm X-Pro3 prices → Lumix S5 prices → Pentax K-3 Mark III prices →

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