A* 135/1.8

General Description
| Product Information | |
|---|---|
| Exact Name | smc PENTAX-A* 1:1.8 135mm |
| Color | black |
| Year of Introduction | 1984 |
| Catalog Number | 23530 |
| Sold with Hood | — |
| Sold with Case | hard case: HE-169B |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 7 elements in 6 groups |
| Aperture Range | f/1.8 ~ f/22 |
| Number of Aperture Blades | 9 |
| Minimum Focusing Distance | 1.2 m |
| Maximum Magnification | unknown |
| Special Features | fixed rear-element extension (FREE) |
| Mechanics | |
| Filter Diameter | 77 mm |
| Maximum Diameter | 80 mm |
| Length | 98 mm |
| Weight | 865 g |
| Accessories | |
| Cap | plastic clip-on cap, 77 mm |
| Fitting Hood(s) | screw-on hood: RH-A77 |
| Fitting Case(s) | hard case: HE-169B |