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Pentax

Pentax HD FA 31mm f/1.8 Limited

The HD version of Pentax's cult FA 31mm Limited: a 31mm f/1.8 full-frame K-mount prime in a machined aluminium barrel with a built-in hood, now with HD and SP coatings and a rounded 9-blade aperture. It weighs 341g, focuses to 30cm and is driven by the camera's screw-drive AF. A characterful everyday wide-normal lens for K-1 and APS-C Pentax bodies.

Starting from
£999 new
Available at 2 retailers
Check price at Clifton Cameras
✓ Available at 2 retailers 🔒 No signup needed 📦 UK stock only
RetailerPrice
Clifton Cameras
Clifton Cameras
£999
Check on Clifton Cameras →
Amazon
Amazon
—
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Prices are synced live from UK retailers. Not every product will be stocked by every retailer; older models may only be available second hand.
Value & Depreciation
£1100
Launch price
→
£999
Today
=
9%
Value drop
Over ~5 years, this camera has cost roughly £20/year to own (buy at launch price, sell today). That's one of the lower cost-per-year cameras in its class.
Core
Released
2021
Focal Length
31mm
Aperture
f/1.8
Compatible Mount
Pentax K-mount
Filter Size
58mm
Dimensions
65mm diameter × 69mm length
Weight
341g
Weather Sealed
No
Optics & Focus
AF Motor
Screw drive from the camera body
Optical IS
None (relies on body IS if available)
Aperture Blades
9
Magnification
0.16x
Min. Focus Distance
0.3m

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GearScore™ — Suitability by Genre

Base score — computed from verified specs for an enthusiast shooting photo and video. Camera Match adjusts it for your skill level and priorities.

Portrait
6.1
Street
7.9
Travel
5.8
Wedding & Events
4.8
Vlogging & Video
4.2
Filmmaking
4.8
Documentary
4.4
Landscape
6.0
Casual
6.1
Food
4.7
Architecture
5.5
Astrophotography
6.9
Underwater
4.3
✅ Great For
🌆
Street 7.9 Strong on focal length, portability and optical quality.
⚠️ Not Ideal For
📱
Vlogging & Video 4.2 Held back by video handling and focal length.
🤿
Underwater 4.3 Held back by focal length and close focusing.
🎥
Documentary 4.4 Held back by video handling and autofocus.
📝 How suitability scores are calculated GearScore™ genre scores are calculated from this camera's verified specifications — autofocus, sensor, weight, weather sealing and more — weighted by what matters for each type of photography. Where a spec sheet misses something (e.g. a manual-focus rangefinder for street), we apply a documented editorial adjustment. Scores are not based on customer reviews. See our full methodology →
Price History — HD FA 31mm f/1.8 Limited
New prices, last 30 days