The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Summarit-M 50mm f2.5 and the Carl Zeiss Planar T2/50 ZM for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is a crucial factor to consider when comparing two lenses. Carl Zeiss Planar T2/50 ZM is the longer of the two lenses at 68mm. The Leica Summarit-M 50mm f2.5 with a length of 33mm, is 35mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 52mm.
The weight of a lens is equally significant as its external dimensions, particularly if you intend to handhold your camera and lens combination for extended periods.
Below you can find the dimension and weight table of the Standard Prime Lenses in Leica M Mount for size comparison purposes.
Standard Lenses in Leica M Mount for Size Comparison
Filter Threads
The Leica Summarit-M 50mm f2.5 has a filter size of 39mm whereas the Carl Zeiss Planar T2/50 ZM has a 43mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 39mm filters that we recommend you to consider for the Leica Summarit-M 50mm f2.5:
And these are the 43mm filters that we recommend for the Carl Zeiss Planar T2/50 ZM:
Lens Mounts
Both the Leica Summarit-M 50mm f2.5 and the Carl Zeiss Planar T2/50 ZM has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Leica M EV1, Leica M11-D and Pixii Max.
Focal Range
Both lenses have the same focal range of
50mm but while Leica Summarit-M 50mm f2.5 has the fastest aperture of
F2.5, the Carl Zeiss Planar T2/50 ZM's widest aperture value is
F2.0.
