Specification of Planar 2/135mm
The Planar 2/135mm lens is purposed for usual film shots.
| Manufacturer | "OPTON" (Germany) | |
| Lens system | - | |
| Focal length | f' | 132.8 mm |
| Angle of view | 2ω' | 11°30' |
| Effective relative aperture | f:nэ | 1:2.2 |
| Lens length | Σd | 81 mm |
| Front focal length | S | -107.8 mm |
| Back focal length | S' | 61.5 mm |
| Flange focal distance | Z | 52.1 mm |
| Block length | B | 111.5 mm |
| Block max. diameter | D | 80 mm |
| Rear diameter | D' | 41.2 mm |
| Front element diameter | d1 | 64.7 mm |
| Rear element diameter | d2 | 31 mm |
| Mount thread | - | |
| Distance from rear end of the housing to the focal plane |
l | 34 mm |
| Aperture blades quantity | ? | |
| Frame size | 16x22 mm | |
| Weight | 0.9 kg |
