Leica 90mm f2 APO-Summicron-M ASPH Lens: Lenses At Ace Cameras

Apochromatic colour correction and an aspherical lens surface are combined for the first time in this lens of this type. Of its five individual elements, two are made of high-refraction glass, while two others feature anomalous partial dispersion. Its brilliance and quality of resolution are exemplary even at full aperture. Light falloff is very low. Its fast aperture, for a 90 mm lens, lets you shoot at relatively short exposure times even in dim light, helping to minimise the effects of camera shake, for instance when photographing street scenes from a distance.

Angle of view (diagonal, horizontal, vertical)	27°, 23°, 15°
Optical design	Number of elements / groups: 5 / 5 Focal length: 90.9 mm Entrance pupil: 58.6 mm (related to the first lens surface in light direction) Focusing range: 1 m to Infinity
Distance setting	Scale: combined meter/feet-increments Smallest object field: 220 mm x 330 mm Highest reproduction ratio: 1:9
Diaphragm	Setting / Type: with clickstops (including half values), manual diaphragm Smallest aperture: f/16
Bayonet	Leica M quick-change bayonet
Filter (type)	internal thread for screw-in type filters E 55
Lens hood	built-in, telescopic
Dimensions and weight	Length: 78 mm Largest diameter: 64 mm Weight: approx. 500 g