A 100/2.8 Macro

General Description
| Product Information | |
|---|---|
| Exact Name | smc PENTAX-A MACRO 1:2.8 100mm |
| Color | black |
| Year of Introduction | 1985 |
| Catalog Number | 28970 |
| Sold with Hood | — |
| Sold with Case | hard case: HG-140 |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 7 elements in 7 groups |
| Aperture Range | f/2.8 ~ f/22 |
| Number of Aperture Blades | 8 |
| Minimum Focusing Distance | 0.31 m |
| Maximum Magnification | 1.0 X |
| Special Features | fixed rear-element extension (FREE), macro lens |
| Mechanics | |
| Filter Diameter | 58 mm |
| Maximum Diameter | 74 mm |
| Length | 93 mm |
| Weight | 470 g |
| Accessories | |
| Cap | plastic clip-on cap, 58 mm |
| Fitting Hood(s) | no hood required |
| Fitting Case(s) | hard case: HG-140 |