| Attribute | Value |
|---|---|
| Lens Construction | 9 elements in 8 groups |
| Diameter | 74 mm |
| Diagonal Angle of View | 24.50 degree |
| Aperture | 2.80 - 32.00 f |
| Notes | Distance scale, Focus range limiter, Focus clamp screw |
| Filter Size | 58 mm |
| Magnification Ratio | 1 x |
| Closest Focus | 0.3 m |
| Focus Details | Internal, manual override |
| Length | 102 mm |
| Diaphragm Blades | 8 |
| APS Equivalent | 150mm |
| Focal Length | 100.00 mm |
| Image Circle | 35mm |
| Brand | Pentax |
| Name | Pentax SMC P-FA 100mm f/2.8 Macro |
| Weight | 601 g |
| Type | Telephoto Prime Macro |
| 35mm Equivalent | Add |
| Effective Reduction in Aperture | Add |
| Focal Length Multiplier | Add |
| APS-C Equivalent | Add |
| Zoom System | Add |
| Diaphragm Blades Type | Add |
| Front Element Rotation | Add |