Zenzanon E 250mm F/5.6
Lens Construction 5 elements 5 groups
Angle of View 16
F numbers 5.6 to 32
Diaphragm Fully automatic
Minimum Focus 300 cm
Shutter speeds 8 sec. tp 1/500 sec. plus T (time exposure)
Electronic leaf shutter Seiko #0
Filter Size  62 mm screw in
Lens hood  
Length  141mm
Weight  840grams (1. 85lbs)
35mm equivalent focal length  150mm