M 50/1.4

General Description
There exists a gold version of this lens (serial number 2413677), but although it looks very professionally done, the gold-plating is probably the work of a Pentax enthusiast.
The optical formula of this lens is identical to that of its predecessors “Super-Multi-Coated TAKUMAR 1:1.4/50”, “SMC TAKUMAR 1:1.4/50”, and “SMC PENTAX 1:1.4/50” (K-Series). Only the “smc” coating was developed one step further.
| Product Information | |
|---|---|
| Exact Name | smc PENTAX-M 1:1.4 50mm |
| Color | black |
| Year of Introduction | 1977 |
| Catalog Number | 20867 |
| Sold with Hood | — |
| Sold with Case | — |
Technical Specifications
| Optics | |
|---|---|
| Optical Formula | 7 elements in 6 groups |
| Aperture Range | f/1.4 ~ f/22 |
| Number of Aperture Blades | 8 |
| Minimum Focusing Distance | 0.45 m |
| Maximum Magnification | 0.15 X |
| Mechanics | |
| Filter Diameter | 49 mm |
| Maximum Diameter | 63 mm |
| Length | 37 mm |
| Weight | 235 g |
| Accessories | |
| Cap | plastic clip-on cap, 49 mm |
| Fitting Hood(s) | screw-on hood: PH-R49 clip-on hood: PH-S49 screw-on hood: RH-R49 |
| Fitting Case(s) | dedicated hard case: exact name unknown |