The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Voigtlander 75mm f1.5 VM and the Leica Summarit-M 75mm f2.5 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. Voigtlander 75mm f1.5 VM is the longer of the two lenses at 63mm. The Leica Summarit-M 75mm f2.5 with a length of 61mm, is 2mm shorter. Besides being longer, the Voigtlander 75mm f1.5 VM also has a larger diameter of 63mm 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, 1% (5g) lighter than the Voigtlander 75mm f1.5 VM's weight of 350g.
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 Voigtlander 75mm f1.5 VM has a filter size of 58mm whereas the Leica Summarit-M 75mm f2.5 has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Voigtlander 75mm f1.5 VM:
And these are the 46mm filters that we recommend for the Leica Summarit-M 75mm f2.5:
Lens Mounts
Both the Voigtlander 75mm f1.5 VM and the Leica Summarit-M 75mm f2.5 has the same Leica M lens mount. Some of the latest released cameras that are compatible with the Leica M lenses are Pixii+, Epson R-D1x and Epson R-D1.
Focal Range
Both lenses have the same focal range of
75mm but while Voigtlander 75mm f1.5 VM has the fastest aperture of
F1.5, the Leica Summarit-M 75mm f2.5's widest aperture value is
F2.5.
