Z6vs Pentax K-3 Mark III

GearFrame · Updated March 2026

Nikon Z6 Nikon Z6 (2018) Starting from £749 new Best for Travel, portrait, video View Z6
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?

Travel, Portrait, Video — Z6 (2018): Nikon's proof of concept — and a genuinely excellent camera.

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

Z6 (2018)

  • Nikon DSLR users making their first move to mirrorless
  • Photographers who want full-frame Nikon glass on a budget

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 pentax k-3 mark iii has the highest resolution at 26mp; the z6 is the most affordable. Scroll down for the full spec breakdown.

Full specifications

Specification Z6 (2018)Pentax K-3 Mark III (2021)
Price £749 £1,699
Sensor Full-frame BSI CMOS 35mm 25.7MP APS-C BSI CMOS (AA-filterless)
Resolution 24.5MP 25.7MP
Video 4K 30fps (full-width), 1080p 120fps 4K/30p, 1080p/60p
Autofocus 273-point phase-detect hybrid AF SAFOX 13 phase-detect, 101-point (25 cross-type)
Stabilisation 5-axis IBIS, 5.0 stops 5.5-stop 5-axis IBIS (Shake Reduction III)
Burst Rate 12fps 12fps
Battery Life 310 shots (CIPA) 800 shots (CIPA)
Weight 585g (body only) 820g body only
Dimensions 134.0 × 100.5 × 67.5mm 134.5 × 103.5 × 73.5mm
Weather Sealed Yes Yes
Viewfinder EVF 0.80× 3.69M-dot Optical pentaprism, 100% coverage, 1.05× magnification
Screen 3.2" tilting touchscreen, 2.1M-dot 3.2" tilting touchscreen
Mount Nikon Z-Mount Pentax KF-mount
Memory Cards Single XQD / CFexpress Type B Dual SD UHS-II
Connectivity Wi-Fi, Bluetooth 4.2, USB-C 3.1, HDMI USB-C, Wi-Fi, Bluetooth
Genre Z6Pentax K-3 Mark III
Landscape
9.0
Wildlife
9.0
Sports & Action
9.0
Portrait
7.0
Travel
7.0
Vlogging & Video
4.0
⚡ Compare specs side by side Z6 prices → Pentax K-3 Mark III prices →

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