M 135mm /f3.4 APO (E49)
It also has very little light falloff even at maximum aperture and minimal distortion, resulting in top pro-level performance.
This lens can render the finest details clearly and in rich contrast.
As the longest focal length in the Leica M system, it's ideal for shooting over long distances and is the perfect completion of any high-class outfit.
It permits distinctive landscape shots with typical telephoto effects: the foreground and background are visually compressed.
Moreover, it enables frame-filling portraits to be shot from afar, so the subject is undisturbed.
Construction 4 Groups/5 Elements
Angle of view 18°
F stop range 3.4-22
Closest Focusing Distance 5'
Maximum Magnification 1:9
Filter Size E 49
Dimensions (Length x Diameter) 4.1'' x 2.3''
Weight 1 lb.