The Cooke Telepanchro 4/317mm lens is purposed for usual film shots.
Manufacturer | "Rank, Taylor & Hobson" (England) | |
Lens system | - | |
Focal length | f' | 318.1 mm |
Angle of view | 2ω' | 4°55' |
Effective relative aperture | f:nэ | 1:4.2 |
Lens length | Σd | 156 mm |
Front focal length | S | -483.8 mm |
Back focal length | S' | 103.2 mm |
Flange focal distance | Z | 52.1 mm |
Block length | B | 228 mm |
Block max. diameter | D | 108 mm |
Rear diameter | D' | 41 mm |
Front element diameter | d1 | 79.5 mm |
Rear element diameter | d2 | 33.4 mm |
Mount thread | - | |
Distance from rear end of the housing to the focal plane | 33 mm | |
Aperture blades quantity | ? | |
Frame size | 16x22 mm | |
Weight | 2.4 kg |