Pentax FA 31mm f/1.8 Limited
Legendary wide-angle prime with exquisite rendering
Key Features
Lens Capabilities
Click the Links Below for Details
The Most Important Rings & Switches — Pentax FA 31mm f/1.8 Limited
| Ring / Switch / Control | Status | Note |
|---|---|---|
| Focus Ring | ✓ Present | Manual focus ring with smooth dampening |
| Zoom Ring | ✗ Not Present | |
| Aperture Ring | ✓ Present | Physical ring with A-position lock |
| AF/MF Switch | ✗ Not Present | Controlled via camera body switch |
| Image Stabilisation Switch | ✗ Not Present | |
| Focus Limiter Switch | ✗ Not Present | |
| Function (L-Fn) Button | ✗ Not Present | |
| Zoom Lock Switch | ✗ Not Present | |
| Optical Image Stabilisation (OIS) | ✗ Not Present | |
| Weather Sealing | ✗ Not Present | All-metal construction, but not weather-sealed |
How-to Use Pentax FA 31mm f/1.8 Limited
Welcome to the How-to section of the lens. In this Light & Composition University website, each page for a lens has a how-to section and a section for learning. The rings, switches and controls of each lens are placed differently between brands and models. The how-to section helps you operate the lens; however, if you are interested in learning photography, you also need to know what each control changes and why you would change it. Click the “Learn” or scroll down.
Learn & Master Photography with Pentax FA 31mm f/1.8 Limited
For over a decade, we have been teaching photography following a university standard. No one does it better than us. We have a selection of courses, diplomas, graduate and post-graduate programs, as well as some of our best-selling university press publications, to guide you in the best possible way for your lens. Enroll in the fundamentals and then move to the genres you want to master.
Technical Specification
| Lens Type | Wide-angle Prime |
| Focal Length | 31mm |
| Maximum Aperture | f/1.8 |
| Minimum Aperture | f/22 |
| Lens Construction | 9 elements in 7 groups |
| Angle of View | 71 degrees (full frame) |
| Diaphragm Blades | 9 |
| Minimum Focus | 0.3m |
| Filter Size | 58mm |
| Dimensions | 65mm x 68.5mm |
| Weight | 345g |
