Focal length: 50mm
Maximum aperture: 1.4
Minimum aperture: 22
Minimum Focus Distance : 1' 6" (45cm)
Number of Blades: 7 aperture blades
Filter Diameter : 55 mm
Lens construction: 7 elements in 6 groups
Magnification : x 0.15
Dimensions (D x L) : 2.9/16" x 1.11/16" (65.5mm x 43mm)
Weight: 8oz (220g)

Bayonet