The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Carl Zeiss Distagon T1,4/35 ZM and the Leica Summicron-M 35mm f2 ASPH for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Carl Zeiss Distagon T1,4/35 ZM is the longer of the two lenses at 65mm. The Leica Summicron-M 35mm f2 ASPH with a length of 35mm, is 30mm shorter. Besides being longer, the Carl Zeiss Distagon T1,4/35 ZM also has a larger diameter of 63mm compared to the Leica Summicron-M 35mm f2 ASPH's 53mm diameter.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Leica Summicron-M 35mm f2 ASPH weighs 255g, 33% (126g) lighter than the Carl Zeiss Distagon T1,4/35 ZM's weight of 381g.
Lens Mounts
Both the Carl Zeiss Distagon T1,4/35 ZM and the Leica Summicron-M 35mm f2 ASPH has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Leica M11, Leica M10 and Leica M Typ 262.
Focal Range
Both lenses have the same focal range of 35mm but while Carl Zeiss Distagon T1,4/35 ZM has the fastest aperture of F1.4, the Leica Summicron-M 35mm f2 ASPH's widest aperture value is F2.0.