| Attribute | Value |
|---|---|
| Length | 68 mm |
| Type | Wide Zoom |
| Weight | 245 g |
| Name | Pentax SMC P-FA 20-35mm f/4 AL |
| Brand | Pentax |
| Image Circle | 35mm |
| Focal Length | 20.00 - 35.00 mm |
| APS Equivalent | 30 - 52.5mm |
| Lens Construction | 10 elements in 8 groups, including 2 aspherical elements |
| Closest Focus | 0.3 m |
| Magnification Ratio | 0.06 x |
| Filter Size | 58 mm |
| Aperture | 4.00 - 22.00 f |
| Diagonal Angle of View | 64.00 - 94.00 degree |
| Zoom System | Rotary |
| Diameter | 69.5 mm |
| 35mm Equivalent | Add |
| Effective Reduction in Aperture | Add |
| Focal Length Multiplier | Add |
| APS-C Equivalent | Add |
| Diaphragm Blades Type | Add |
| Notes | Add |
| Front Element Rotation | Add |
| Focus Details | Add |
| Diaphragm Blades | Add |