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 Carl Zeiss Planar T1,4/50 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 T1,4/50 is the longer of the two lenses at 69mm. The Voigtlander 75mm f1.5 VM with a length of 63mm, is 6mm shorter. Besides being longer, the Carl Zeiss Planar T1,4/50 also has a larger diameter of 66mm 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.
Filter Threads
Both the Voigtlander 75mm f1.5 VM and the Carl Zeiss Planar T1,4/50 have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Voigtlander 75mm f1.5 VM has the Leica M lens mount whereas the Carl Zeiss Planar T1,4/50 has the Pentax KAF lens mount. Some of the latest released cameras that are compatible with these mounts are Pixii+, Epson R-D1x and Epson R-D1 for the Leica M Mount and Pentax K-3 III Mono, Pentax KF and Pentax K-3 III for the Pentax KAF Mount.
Carl Zeiss Planar T1,4/50 is also available in Canon EF and Nikon F (FX) mounts.
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 Carl Zeiss Planar T1,4/50 is a prime lens with fixed focal lenght of 50mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 75mm.
