Pentax Pentax HD Pentax-FA 31mm f/1.8 Limited (Silver) Review
Focal Length 31mm
Max Aperture f/1.8
Mount Pentax K
Stabilization No
Weather Sealed No
Weight 340 g
AF Type Autofocus
60.8 Overall Score
Overview
Performance
Pros & Cons
Pros
- Strong build (82th percentile) 84th
- Strong bokeh (80th percentile) 82th
- Strong aperture (77th percentile) 76th
Cons
Specifications
Full Specifications
Optics
| Focal Length Min | 31 |
| Focal Length Max | 31 |
| Elements | 9 |
| Groups | 7 |
Aperture
| Max Aperture | f/1.8 |
| Min Aperture | f/22 |
| Diaphragm Blades | 9 |
Build
| Mount | Pentax K |
| Format | Full-Frame |
| Weight | 0.3 kg / 0.7 lbs |
| Filter Thread | 58 |
AF & Stabilization
| AF Type | Autofocus |
| Stabilization | No |
Focus
| Min Focus Distance | 300 |
| Max Magnification | 1:6.25 |
Value & Pricing
Feb 18, 2026 $997
vs Competition
| Spec | Pentax Pentax HD Pentax-FA 31mm f/1.8 Limited (Silver) | Meike Meike 55mm F1.4 Standard Aperture APS-C Frame AF | Sony Sony G Master Sony FE 35mm F1.4 GM Full-Frame Large-Aperture | Canon Canon L Canon - RF35mm F1.4 L VCM Wide-Angle Lens for EOS | Viltrox VILTROX 35mm F1.7 f/1.7 Air AF Lens for Fuji X | Nikon Nikon S-Line Nikon - NIKKOR Z 24-70mm f/2.8 S II Wide-angle |
|---|---|---|---|---|---|---|
| Focal Length | 31mm | 55mm | 35mm | 35mm | 35mm | 24-70mm |
| Max Aperture | f/1.8 | f/1.4 | f/1.4 | f/1.4 | f/1.7 | f/2.8 |
| Mount | Pentax K | Nikon Z | Sony E-Mount, Sony E-Mount (Full-Frame) | Canon RF | Fujifilm X | Nikon Z |
| Stabilization | false | true | true | true | true | true |
| Weather Sealed | false | false | true | true | false | true |
| Weight (g) | 340 | 281 | 522 | 544 | 400 | 676 |
| AF Type | Autofocus | STM | Autofocus | Autofocus | STM | Autofocus |
| Lens Type | - | - | Wide-Angle | Wide-Angle | - | Wide-Angle Zoom |