Mount: Adaptall II (Interchangeable mount system)

15 elements in 11 groups
Angle of View:  40°-8°
Type of Zooming:  Push-pull
Diaphragm Blade Number: 8
Minimum Aperture:  F/32
Minimum Focus:  74.8in. (1.9m)/60, 0.34in (0.34m)/macro
Macro Mag. Ratio 1:1.5
Filter Diameter: ø62
Weight: 30.7oz. (870gm)
Diameter x Length: ø2.7 x 6.5in. (ø68 x 166mm)