K 17/4 Fish-Eye
General Description
| Product Variations | ||
|---|---|---|
| Exact Name | SMC PENTAX FISH-EYE 1:4/17 | smc PENTAX FISH-EYE 1:4 17mm |
| Color | black | black |
| Year of Introduction | 1975 | 1977 |
| Catalog Number | 21240 | 21240 |
| Sold with Hood | — | — |
| Sold with Case | dedicated hard case: exact name unknown | dedicated hard case: exact name unknown |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 11 elements in 7 groups |
| Aperture Range | f/4 ~ f/22 |
| Number of Aperture Blades | 6 |
| Minimum Focusing Distance | 0.2 m |
| Maximum Magnification | unknown |
| Special Features | fish-eye lens |
| Mechanics | |
| Front-Filter Thread | no |
| Built-in Filters | Y48(Y2), Skylight, none, L39(UV), O56(O2) |
| Gelatine-Filter Holder | yes |
| Maximum Diameter | 65 mm |
| Length | 34 mm |
| Weight | 235 g |
| Accessories | |
| Cap | metal slip-on cap, 65 mm |
| Fitting Hood(s) | not applicable |
| Fitting Case(s) | dedicated hard case: exact name unknown |
