K 20/1.4 AL
General Description
| Product Information | |
|---|---|
| Exact Name | SMC PENTAX 1:1.4 20mm |
| Color | black |
| Year of Introduction | 1976 |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 11 elements in 10 groups |
| Aperture Range | f/1.4 ~ f/22 |
| Number of Aperture Blades | unknown |
| Minimum Focusing Distance | 0.25 m |
| Maximum Magnification | unknown |
| Special Features | aspherical element(s) |
| Mechanics | |
| Filter Diameter | 77 mm |
| Maximum Diameter | 80 mm |
| Length | 65 mm |
| Weight | 445 g |
| Accessories | |
| Cap | unknown |
| Fitting Hood(s) | unknown |
| Fitting Case(s) | unknown |