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 APO 90mm 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 90mm f2 ASPH is the longer of the two lenses at 78mm. The Voigtlander 75mm f1.5 VM with a length of 63mm, is 15mm shorter. Besides being longer, the Leica APO 90mm f2 ASPH also has a larger diameter of 64mm compared to the Voigtlander 75mm f1.5 VM's 63mm 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. Voigtlander 75mm f1.5 VM weighs 350g, which means it is 150g (30%) lighter than the Leica APO 90mm f2 ASPH which has a weight of 500g.
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 APO 90mm f2 ASPH has a 55mm 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 55mm filters that we recommend for the Leica APO 90mm f2 ASPH:
Lens Mounts
Both the Voigtlander 75mm f1.5 VM and the Leica APO 90mm f2 ASPH 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
Voigtlander 75mm f1.5 VM is a prime lens with fixed focal lenght of 75mm which has an effective (full-frame 35mm equivalent) focal range of
112.5mm when used on a 35mm FF format camera.
On the other hand, the Leica APO 90mm f2 ASPH is a prime lens with fixed focal lenght of 90mm.
