K 20/4
General Description
| Product Information | |
|---|---|
| Exact Name | SMC PENTAX 1:4/20 |
| Color | black |
| Year of Introduction | 1975 |
| Catalog Number | 22841 |
| Sold with Hood | — |
| Sold with Case | dedicated hard case: exact name unknown |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 12 elements in 10 groups |
| Aperture Range | f/4 ~ f/22 |
| Number of Aperture Blades | 5 |
| Minimum Focusing Distance | 0.25 m |
| Maximum Magnification | 0.12 X |
| Mechanics | |
| Filter Diameter | 58 mm |
| Maximum Diameter | 63 mm |
| Length | 57 mm |
| Weight | 300 g |
| Accessories | |
| Cap | plastic clip-on cap, 58 mm |
| Fitting Hood(s) | clip-on hood: PH-S58 |
| Fitting Case(s) | dedicated hard case: exact name unknown |
