M* 300/4
General Description
This was the very first of the PENTAX * lenses and the only M* lens. Its optical formula lived on in its successor, the smc PENTAX-A* 1:4 300mm. Both lenses by far surpassed the imaging quality of their K series predecessor albeit being much smaller. However, they inherited the same relatively limited minimal focisng distance (4 meters). Although this lens has a built-in hood, Pentax has designed a dedicated hood for it. Strange!
| Product Information | |
|---|---|
| Exact Name | smc PENTAX-M* 1:4 300mm |
| Color | black |
| Year of Introduction | 1981 |
| Catalog Number | 24360 |
| Sold with Hood | — |
| Sold with Case | hard case: SMC PENTAX 4/300 |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 8 elements in 7 groups |
| Aperture Range | f/4 ~ f/32 |
| Number of Aperture Blades | 8 |
| Minimum Focusing Distance | 4.0 m |
| Maximum Magnification | unknown |
| Mechanics | |
| Filter Diameter | 77 mm |
| Maximum Diameter | 84 mm |
| Length | 132 mm |
| Weight | 825 g |
| Accessories | |
| Cap | plastic clip-on cap, 77 mm |
| Fitting Hood(s) | built-in hood |
| Fitting Case(s) | unknown |
