| Available Mounts | Compur 1 | Prontor Prof. 1 | Copal 1 | BK 1 |
|
Lens Elements, Groups |
6, 4 | 6, 4 | 6, 4 | 6, 4 |
| Flange Focal Distance | 171.2mm | 169.8mm | 171.3mm | 171.2mm |
|
Accessory Thread |
M 67 X 0.75 |
M 67 X 0.75 |
M 67 X 0.75 | M 67 X 0.75 |
|
Mounting Thread |
M 39 X 0.75 |
M 39 X 0.75 |
M 39 X 0.75 | M 39 X 0.75 |
|
Max. f/# |
64 |
64 |
64 | 64 |
|
Weight |
495g |
470g |
450g | 405g |
|
Overall Length |
64mm |
64mm |
64mm | 64mm |
Recommended Format Size |
130 X 180 mm |
130 X 180 mm |
130 X
180 mm (5 X 7") |
130 X 180 mm |
Image Circle Diameter at f/22 |
252mm | 252mm | 252mm | 252mm |
Angle of View at f/22 |
70 degrees | 70 degrees | 70 degrees | 70 degrees |
Lens Displacement at f/22 (vertical/horizontal) |
||||
| 2.5 X 3.5" ; 56 X 80 mm | 91/83mm | 91/83mm | 91/83mm | 91/83mm |
| 65 X 90 mm ; 58 X 81 mm | 90/82mm | 90/82mm | 90/82mm | 90/82mm |
| 90 X 120 mm ; 83 X 114 mm | 71/62mm | 71/62mm | 71/62mm | 71/62mm |
| 4 X 5" ; 96 X 120 mm | 63/56mm | 63/56mm | 63/56mm | 63/56mm |
| 5 X 7" ; 121 X 170 mm | 33/26mm | 33/26mm | 33/26mm | 33/26mm |
| 130 X 180 mm ; 122 X 171 mm | 32/25mm | 32/25mm | 32/25mm | 32/25mm |
Effective Focal Length (F') |
180.0mm |
180.0mm |
180.0mm | 180.0mm |
Back Focal Length (S'F') |
149.5mm |
149.5mm |
149.5mm | 149.5mm |
Principal Point Separation (HH') |
-3.4mm |
-3.4mm |
-3.4mm | -3.4mm |