The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Leica Summarit-M 75mm f2.5 and the Leica APO 75mm f2 ASPH 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. Leica APO 75mm f2 ASPH is the longer of the two lenses at 67mm. The Leica Summarit-M 75mm f2.5 with a length of 61mm, is 6mm shorter. Besides being longer, the Leica APO 75mm f2 ASPH also has a larger diameter of 58mm compared to the Leica Summarit-M 75mm f2.5's 55mm diameter.
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. Leica Summarit-M 75mm f2.5 weighs 345g, which means it is 85g (19%) lighter than the Leica APO 75mm f2 ASPH which has a weight of 430g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Leica M Mount for size comparison purposes.
Telephoto Lenses in Leica M Mount for Size Comparison
Filter Threads
The Leica Summarit-M 75mm f2.5 has a filter size of 46mm whereas the Leica APO 75mm f2 ASPH has a 49mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 46mm filters that we recommend you to consider for the Leica Summarit-M 75mm f2.5:
And these are the 49mm filters that we recommend for the Leica APO 75mm f2 ASPH:
Lens Mounts
Both the Leica Summarit-M 75mm f2.5 and the Leica APO 75mm 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 M EV1, Leica M11-D and Pixii Max.
Focal Range
Both lenses have the same focal range of
75mm but while Leica Summarit-M 75mm f2.5 has the fastest aperture of
F2.5, the Leica APO 75mm f2 ASPH's widest aperture value is
F2.0.
