| Lens Specifications | |
|---|---|
| Name | Pentax SMC P-FA 20-35mm f/4 AL |
| Image Circle | 35mm |
| Type | Wide Zoom |
| Focal Length | 20 - 35mm |
| APS Equivalent | 30 - 52.5mm |
| Max Aperture | f/4 |
| Min Aperture | f/22 |
| Diaphragm Blades | ? |
| Lens Construction | 10 elements in 8 groups, including 2 aspherical elements |
| Diagonal Angle of View(Based on image circle) | 94 to 64 degrees |
| Focus Details | |
| Front Element Rotation | ? |
| Zoom System | Rotary |
| Closest Focus | 30cm / 11.8 in. |
| Magnification Ratio | 0.06x / 1:16.3 |
| Filter Size | 58mm |
| Dimensions(Length x Diameter) | 68mm x 69.5mm / 2.7 in. x 2.7 in. |
| Weight | 245g / 8.6 oz |
| Notes | |
| Typical Online Price | US$499.95 |
