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Pentax

Pentax K-3 Mark III

The last great APS-C DSLR. The Pentax K-3 Mark III combines a 25.7MP APS-C sensor with optical AA-filterless design, 5-axis IBIS, and the finest weather sealing in any APS-C DSLR — for photographers who prefer an optical viewfinder.

Typical Price
£1699–£1899
Average price across retailers: ~£1799
Available at 2 retailers
Check price at Amazon
✓ Available at 2 retailers 🔒 No signup needed 📦 UK stock only
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Amazon ★ Best
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eBay
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Core
Sensor
25.7MP APS-C BSI CMOS (AA-filterless)
Resolution
25.7 MP
Mount
Pentax KF-mount
Dimensions
134.5 × 103.5 × 73.5mm
Weight
820g body only
Weather Sealed
Yes
Performance
Autofocus
SAFOX 13 phase-detect, 101-point (25 cross-type)
Stabilisation
5.5-stop 5-axis IBIS (Shake Reduction III)
Burst Rate
12fps
Battery Life
800 shots (CIPA)
Features
Video
4K/30p, 1080p/60p
Viewfinder
Optical pentaprism, 100% coverage, 1.05× magnification
Screen
3.2" tilting touchscreen
Memory Cards
Dual SD UHS-II
Connectivity
USB-C, Wi-Fi, Bluetooth

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Suitability Score by Genre
Landscape
9.0
Wildlife
9.0
Sports & Action
9.0
Portrait
7.0
Travel
7.0
Vlogging & Video
4.0
✅ Great For
🏔️
Landscape Class-leading weather sealing and IBIS handle extreme outdoor conditions.
🦅
Wildlife OVF, IBIS, and rugged build handle wildlife photography in any environment.
⚡
Sports & Action 12fps burst and optical viewfinder deliver reliable sports performance.
👤
Portrait AA-filterless sensor delivers excellent detail. Large OVF aids accurate framing.
✈️
Travel Weather sealing handles travel conditions. Heavy at 820g for a travel camera.
⚠️ Not Ideal For
🎬
Vlogging & Video DSLR form and limited video AF make it impractical for run-and-gun video.
📝 How suitability scores are calculated Scores reflect the aggregated consensus from verified purchaser reviews across tracked UK retailers, weighted by photography genre tags applied by reviewers. This is community opinion — not GearFrame editorial assessment.
Price History — Pentax K-3 Mark III