| Attribute | Value |
|---|---|
| Length | 44 mm |
| Type | Wide Prime |
| Weight | 255 g |
| Name | Pentax SMC P-FA 20mm f/2.8 |
| Brand | Pentax |
| Image Circle | 35mm |
| Focal Length | 20.00 mm |
| APS Equivalent | 30mm |
| Lens Construction | 10 elements in 9 groups |
| Closest Focus | 0.24 m |
| Magnification Ratio | 0.12 x |
| Filter Size | 67 mm |
| Aperture | 2.80 - 22.00 f |
| Diagonal Angle of View | 94.00 degree |
| Diameter | 70 mm |
| 35mm Equivalent | Add |
| Effective Reduction in Aperture | Add |
| Focal Length Multiplier | Add |
| APS-C Equivalent | Add |
| Zoom System | Add |
| Diaphragm Blades Type | Add |
| Notes | Add |
| Front Element Rotation | Add |
| Focus Details | Add |
| Diaphragm Blades | Add |