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Q3 43vs Pentax K-3 Mark III

GearFrame · Updated March 2026

Leica Q3 43 Leica Q3 43 (2024) Starting from £6995 new Best for Documentary, portrait & reportage photography View Q3 43
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?

Documentary, Portrait & Reportage Photography — Q3 43 (2024): The Q3 with the most human lens — 43mm, 60MP, and Leica rendering at its most natural and versatile.

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

Q3 43 (2024)

  • Portrait and documentary photographers who find 28mm too wide and 50mm too tight
  • Q3 owners who prefer a natural 43mm perspective over the iconic 28mm Summilux
  • Reportage photographers who want the discreet Q3 form factor with a more intimate focal length
  • Leica system users who want a fixed-lens body that excels across multiple genres

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 q3 43 has the highest resolution at 60mp; the pentax k-3 mark iii is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification Q3 43 (2024)Pentax K-3 Mark III (2021)
Price £6,995 £1,699
Sensor 60MP full-frame BSI CMOS 25.7MP APS-C BSI CMOS (AA-filterless)
Resolution 60.0MP 25.7MP
Video 8K/30p, 4K/60p 10-bit — L-Log 4K/30p, 1080p/60p
Autofocus Phase-detect AF with face and eye detection SAFOX 13 phase-detect, 101-point (25 cross-type)
Stabilisation 8-stop IBIS (combined with OIS) 5.5-stop 5-axis IBIS (Shake Reduction III)
Burst Rate 15fps electronic 12fps
Battery Life ~350 shots (CIPA) 800 shots (CIPA)
Weight 743g body only 820g body only
Dimensions 130.0 × 80.3 × 91.1mm 134.5 × 103.5 × 73.5mm
Weather Sealed Yes Yes
Viewfinder EVF 0.79× 5.76M-dot OLED Optical pentaprism, 100% coverage, 1.05× magnification
Screen 3.0" fully articulating touchscreen, 1.84M dots 3.2" tilting touchscreen
Mount Fixed Summicron-M 43mm f/2 ASPH (43mm — closest to human field of view) Pentax KF-mount
Memory Cards Single UHS-II SD slot Dual SD UHS-II
Connectivity USB-C 3.2 Gen 2, Wi-Fi 5GHz, Bluetooth 5.0 USB-C, Wi-Fi, Bluetooth
Genre Q3 43Pentax K-3 Mark III
Portrait
9.0
7.0
Street
9.0
Travel
9.0
7.0
Landscape
7.0
9.0
Sports
4.0
Wildlife
4.0
9.0
Sports & Action
9.0
Vlogging & Video
4.0

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

⚡ Compare specs side by side Q3 43 prices → Pentax K-3 Mark III prices →

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