This lens can be used for the scientific applications such as the solid angle measurements of cloud distribution over the sky, the vegetation distribution of the forest, etc., due to the quantifiable angle/area relationship it produces.
|
Lens Construction
|
10 Elements in 6 Groups
|
| Angle of View |
180 degrees |
| Number of Diaphragm Blades |
5 Blades |
| Minimum Aperture |
F32 |
| Minimum Focusing Distance |
20cm/7.9 in. |
| Maximum Magnification |
1:13.9 |
| Filter Size |
Rear (Gelatin filter) |
| Dimensions |
Diameter 73.5mm X Length 63mm
2.9 in. X 2.5 in. |
| Weight |
320g/11.3 oz |
| Corresponding AF Mounts |
SIGMA,
CANON,
NIKON,
MINOLTA,
PENTAX |