Focal length: 135mm
Maximum aperture: 2.8
Minimum aperture: 31
Minimum Focus Distance : 2.85' (87cm)
Number of Blades : 9 blades
Lens construction: 2 elements in 1 group
Magnification : x0.25
Dimensions (D x L) : 3.1/8" x 3.7/8" (80mm x 99mm)
Weight: 1lb 10oz (730g)

Bayonet