Leica Summarit-M 90mm f2.5 is a Manual Focus (MF)
Perspective Control Prime lens with 35mm FF max sensor coverage and it is designed to be used with Leica M mount cameras.
Lens Mount
Leica Summarit-M 90mm f2.5 is compatible with cameras that have Leica M lens mount.Some of the latest released cameras with Leica M lens mount are
Leica M10,
Leica M Typ 262 and
Leica M Edition 60.
Sensor Coverage
Max sensor coverage of Leica Summarit-M 90mm f2.5 is 35mm FF.
Focal Range
Leica Summarit-M 90mm f2.5 has a fixed focal lenght of 90mm.
Optical Image Stabilization
Leica Summarit-M 90mm f2.5 doesn't have an optical image stabilization system so the only option to stabilize the image taken with this lens is to mount on a camera body with IBIS (sensor based In-body image stabilization).
Aperture
Leica Summarit-M 90mm f2.5 has a max aperture of F2.5 and a minimum aperture of F16.0.
Optical Formula
Leica Summarit-M 90mm f2.5's optical formula consists of 5 elements in 4 groups.