| Lens Specifications | |
|---|---|
| Name | Pentax SMC P-FA 20mm f/2.8 |
| Image Circle | 35mm |
| Type | Wide Prime |
| Focal Length | 20mm |
| APS Equivalent | 30mm |
| Max Aperture | f/2.8 |
| Min Aperture | f/22 |
| Diaphragm Blades | ? |
| Lens Construction | 10 elements in 9 groups |
| Diagonal Angle of View(Based on image circle) | 94 degrees |
| Focus Details | |
| Front Element Rotation | ? |
| Zoom System | n/a |
| Closest Focus | 24.4cm / 9.6 in. |
| Magnification Ratio | 0.12x / 1:8.3 |
| Filter Size | 67mm |
| Dimensions(Length x Diameter) | 44mm x 70mm / 1.7 in. x 2.8 in. |
| Weight | 255g / 9 oz |
| Notes | |
| Typical Online Price | US$499.95 |
