K 28-50/3.5-4.5
General Description
| Product Information | |
|---|---|
| Exact Name | SMC PENTAX ZOOM 1:3.5 28mm~1:4.5 50mm |
| Color | black |
| Year of Introduction | 1975 |
| Catalog Number | unknown |
| Sold with Hood | — |
| Sold with Case | dedicated hard case: exact name unknown |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 10 elements in 10 groups |
| Aperture Range | f/3.5 (4.5) ~ f/22 (32) |
| Number of Aperture Blades | 6 |
| Minimum Focusing Distance | 0.55 m |
| Maximum Magnification | unknown |
| Mechanics | |
| Filter Diameter | 52 mm |
| Maximum Diameter | 65 mm |
| Length | 52 mm |
| Weight | 315 g |
| Accessories | |
| Cap | plastic clip-on cap, 52 mm |
| Fitting Hood(s) | clip-on hood: PH-R52 |
| Fitting Case(s) | dedicated hard case: exact name unknown |
