Zenzanon E 500mm F/8
 
Lens Construction 6 elements 7 groups
Angle of View 8
F numbers 8 to 32
Diaphragm Fully automatic
Minimum Focus  850cm
Shutter speeds 8 sec. tp 1/500 sec. plus T (time exposure)
Electronic leaf shutter Seiko #0
Filter Size  95mm screw in
Lens hood  
Length  267mm
Weight  1890grams (4.17 lbs)
35mm equivalent focal length  300mm