A 16/2.8 Fish-Eye

General Description
| Product Information | ||
|---|---|---|
| Exact Name | smc PENTAX-A FISH-EYE 1:2.8 16mm | |
| Color | black | |
| Year of Introduction | 1985 | |
| Sales Variations | ||
| Catalog Number | 21305 | 21300 |
| Sold with Hood | — | — |
| Sold with Case | soft case: S70-70 | hard case: HD-100 |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 9 elements in 7 groups |
| Aperture Range | f/2.8 ~ f/22 |
| Number of Aperture Blades | 6 |
| Minimum Focusing Distance | 0.2 m |
| Maximum Magnification | 0.15 X |
| Special Features | fish-eye lens |
| Mechanics | |
| Front-Filter Thread | no |
| Built-in Filters | Y48(Y2), Skylight, none, O56(O2) |
| Gelatine-Filter Holder | yes |
| Maximum Diameter | 65 mm |
| Length | 56 mm |
| Weight | 320 g |
| Accessories | |
| Cap | metal slip-on cap, 65 mm |
| Fitting Hood(s) | not applicable |
| Fitting Case(s) | hard case: HD-100 soft case: S70-70 |