The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Summilux-M 35mm f1.4 ASPH and the Carl Zeiss C Biogon T2,8/35 ZM 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 C Biogon T2,8/35 ZM is the longer of the two lenses at 55mm. The Leica Summilux-M 35mm f1.4 ASPH with a length of 46mm, is 9mm shorter. On the other hand, the Leica Summilux-M 35mm f1.4 ASPH has a larger diameter of 56mm compared to the Carl Zeiss C Biogon T2,8/35 ZM's 52mm 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. Carl Zeiss C Biogon T2,8/35 ZM weighs 200g, 37% (120g) lighter than the Leica Summilux-M 35mm f1.4 ASPH's weight of 320g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Leica M Mount for size comparison purposes.
Wideangle Prime Lenses in Leica M Mount for Size Comparison
Lens Mounts
Both the Leica Summilux-M 35mm f1.4 ASPH and the Carl Zeiss C Biogon T2,8/35 ZM 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 Leica Summilux-M 35mm f1.4 ASPH has the fastest aperture of F1.4, the Carl Zeiss C Biogon T2,8/35 ZM's widest aperture value is F2.8.