📷 Cameras 🔭 Lenses 🎒 Accessories 🏷 Brands

Pentax K-3 Mark IIIvs A6000

GearFrame · Updated March 2026

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
VS
Sony A6000 Sony A6000 (2014) Starting from £249 new Best for Entry-level mirrorless & budget E-mount View A6000

GearScore™ Verdict — Which should you buy?

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.

Entry-Level Mirrorless & Budget E-Mount — A6000 (2014): The Sony that started a generation of E-mount loyalty — 11fps, 24MP, and 179 phase-detect points in a compact body that remained excellent value for nearly a decade.

↓ Full specifications below

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

A6000 (2014)

  • First-time mirrorless buyers who want a capable, proven body at the lowest price
  • Sony E-mount users who want a compact backup or second body
  • Parents and travellers who want good image quality without a large camera
  • Anyone curious about APS-C mirrorless who wants to try the system affordably

Quick take: The pentax k-3 mark iii has the highest resolution at 26mp; the a6000 is the most affordable; only the pentax k-3 mark iii is weather sealed. Scroll down for the full spec breakdown.

Full specifications

Specification Pentax K-3 Mark III (2021)A6000 (2014)
Price £1,699 £249
Sensor 25.7MP APS-C BSI CMOS (AA-filterless) 24.3MP APS-C Exmor APS HD CMOS
Resolution 25.7MP 24.3MP
Video 4K/30p, 1080p/60p 1080p/60p
Autofocus SAFOX 13 phase-detect, 101-point (25 cross-type) 179 phase-detect + 25 contrast-detect AF points
Stabilisation 5.5-stop 5-axis IBIS (Shake Reduction III) None
Burst Rate 12fps 11fps
Battery Life 800 shots (CIPA) ~360 shots (CIPA)
Weight 820g body only 344g (with battery and card)
Dimensions 134.5 × 103.5 × 73.5mm 119.9 × 66.9 × 45.1mm
Weather Sealed Yes No
Viewfinder Optical pentaprism, 100% coverage, 1.05× magnification EVF, OLED 1.44M dots, 0.70× magnification
Screen 3.2" tilting touchscreen 3.0" tilting LCD, 921k dots (no touch)
Mount Pentax KF-mount Sony E-mount
Memory Cards Dual SD UHS-II Single SD UHS-I slot
Connectivity USB-C, Wi-Fi, Bluetooth USB, Wi-Fi, NFC
Genre Pentax K-3 Mark IIIA6000
Landscape
9.0
Wildlife
9.0
7.0
Sports & Action
9.0
7.0
Portrait
7.0
7.0
Travel
7.0
9.0
Vlogging & Video
4.0
4.0
Street
7.0

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

⚡ Compare specs side by side Pentax K-3 Mark III prices → A6000 prices →

More comparisons with Pentax K-3 Mark III

Camera family history