Leica Summilux-M 35mm f/1.4 ASPH Wide-Angle Lens

Angle of view (diagonal, horizontal, vertical)	For 35 mm format (24 x 36 mm): 63°, 54°, 37° / For Leica M8 models (18 x 27 mm): 49°, 42°, 28°, equivalent to approx. 47 mm for 35 mm format
Number of lenses/groups	9/5
Aspherical surfaces	1
Position of entrance pupil (to the apex of the first lens surface)	1.68 cm
Focusing range	2.3 feet to infinity
Scales	Combined metre/feet graduation
Smallest object field/ Largest reproduction ratio	For 35 mm format: approx. 16.5 × 24.6 in / 1:17.4 / For Leica M8 models: approx. 12.3 × 18.5 in / 1:17.4
Aperture Setting/function	With click-stops, half values available
Lowest value	16
Bayonet	Leica M quick-change bayonet with 6-bit bar-coding for digital M-models
Filter mount	Inner threading for E46 screw-in filters, non-rotating front element
Lens hood	Detachable (supplied with the lens)
Viewfinder	Camera viewfinder
Finish	Black anodized
Length to bayonet flange	approx. 4.6/5.8 cm (with/without lens hood)
Largest diameter	approx. 5.6 cm
Weight	approx. 11 oz