Angle of View (Diagonal)     74°20’~27°50’
Angle of View (Horizontal)     64°30’~23°20’
Angle of View (Vertical)     45°30’~15°40’
Closest Focusing Distance (m, ft)     0.25/0.82
Construction (groups elements)     11-13
Diameter x Length (mm) (Maximum)     60.9 x 61.0
Distance Scale     o
Drive System     Stepping motor-driven lead screw + rack system
Filter Size (mm)     52
Maximum Magnification (x)     0.25
Minimum Aperture     38
No. of Diaphragm Blades     7
Weight (g) (Approximately)     210