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GFX 50Svs Pentax K-3 Mark III

GearFrame · Updated March 2026

Fujifilm GFX 50S Fujifilm GFX 50S (2017) Starting from £1499 new Best for Studio, portrait & landscape photography View GFX 50S
VS
Pentax Pentax K-3 Mark III Pentax Pentax K-3 Mark III (2021) Starting from £1699 new Best for DSLR enthusiasts & outdoor photographers View Pentax K-3 Mark III

GearScore™ Verdict — Which should you buy?

Studio, Portrait & Landscape Photography — GFX 50S (2017): The camera that launched Fujifilm's medium-format revolution — 51MP at a price that made serious large-format imaging possible for the first time.

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

GFX 50S (2017)

  • Photographers who want to enter the GFX system at the lowest possible price
  • Studio and portrait photographers who want medium-format tonal quality on a budget
  • Landscape photographers who work from a tripod and don't need IBIS
  • GFX system historians who want the camera that started it all

Pentax K-3 Mark III (2021)

  • DSLR photographers who want the finest APS-C optical viewfinder experience
  • Outdoor and weather photographers who need robust all-weather sealing
  • Pentax lens owners who want to use their existing K-mount glass
  • Photographers who prefer optical viewfinders and refuse to switch to mirrorless

Quick take: The gfx 50s has the highest resolution at 51mp; the gfx 50s is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification GFX 50S (2017)Pentax K-3 Mark III (2021)
Price £1,499 £1,699
Sensor 51.4MP Medium Format BSI CMOS (43.8 × 32.9mm) 25.7MP APS-C BSI CMOS (AA-filterless)
Resolution 51.4MP 25.7MP
Video 1080p/30p 4K/30p, 1080p/60p
Autofocus Contrast-detect AF, face detection SAFOX 13 phase-detect, 101-point (25 cross-type)
Stabilisation None 5.5-stop 5-axis IBIS (Shake Reduction III)
Burst Rate 3fps 12fps
Battery Life ~400 shots (CIPA) 800 shots (CIPA)
Weight 825g (with battery and card) 820g body only
Dimensions 147.5 × 94.2 × 91.4mm 134.5 × 103.5 × 73.5mm
Weather Sealed Yes Yes
Viewfinder Detachable EVF, 3.69M dots, 0.85× magnification Optical pentaprism, 100% coverage, 1.05× magnification
Screen 3.2" tilting touchscreen + rear sub-LCD 3.2" tilting touchscreen
Mount Fujifilm GFX (G-mount) Pentax KF-mount
Memory Cards Dual SD UHS-II slots Dual SD UHS-II
Connectivity USB-C, Wi-Fi, Bluetooth USB-C, Wi-Fi, Bluetooth
Genre GFX 50SPentax K-3 Mark III
Portrait
9.0
7.0
Landscape
9.0
9.0
Architecture
9.0
Travel
4.0
7.0
Sports & Action
4.0
9.0
Vlogging & Video
4.0
4.0
Wildlife
9.0

GearScore™ suitability scores are based on aggregated purchaser reviews weighted by photography genre. See how scores are calculated →

⚡ Compare specs side by side GFX 50S prices → Pentax K-3 Mark III prices →

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