K 18/3.5
General Description
| Product Variations | ||
|---|---|---|
| Exact Name | SMC PENTAX 1:3.5/18 | smc PENTAX 1:3.5 18mm |
| Color | black | black |
| Year of Introduction | 1975 | 1977 |
| Catalog Number | 22160 | 22160 |
| Sold with Hood | — | — |
| Sold with Case | hard case: SMC PENTAX 3.5/18 | hard case: SMC PENTAX 3.5/18 |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 12 elements in 11 groups |
| Aperture Range | f/3.5 ~ f/22 |
| Number of Aperture Blades | 5 |
| Minimum Focusing Distance | 0.25 m |
| Maximum Magnification | unknown |
| Mechanics | |
| Filter Diameter | 58 mm |
| Built-in Filters | Cloudy, Skylight, Y48 (Y2), O56 (O2) |
| Gelatine-Filter Holder | yes |
| Maximum Diameter | 63 mm |
| Length | 62 mm |
| Weight | 295 g |
| Accessories | |
| Cap | plastic clip-on cap, 58 mm |
| Fitting Hood(s) | clip-on hood: PH-S58 |
| Fitting Case(s) | hard case: SMC PENTAX 3.5/18 |
