The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Carl Zeiss Planar T1,4/50 and the Voigtlander 58mm F1.4 SL II 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 58mm F1.4 SL II with a length of 48mm, is 21mm shorter. Besides being longer, the Carl Zeiss Planar T1,4/50 also has a larger diameter of 66mm compared to the Voigtlander 58mm F1.4 SL II's 64mm 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 58mm F1.4 SL II weighs 320g, 8% (30g) lighter than the Carl Zeiss Planar T1,4/50's weight of 350g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Pentax KAF Mount for size comparison purposes.
Standard Lenses in Pentax KAF Mount for Size Comparison
Filter Threads
Both the Carl Zeiss Planar T1,4/50 and the Voigtlander 58mm F1.4 SL II 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
Both the Carl Zeiss Planar T1,4/50 and the Voigtlander 58mm F1.4 SL II has the same Pentax KAF lens mount. Some of the latest released cameras that are compatible with the Pentax KAF lenses are Pentax K-3 III Monochrome, Pentax KF and Pentax K-3 III.
Carl Zeiss Planar T1,4/50 is also available in Canon EF and Nikon F (FX) mounts.
Voigtlander 58mm F1.4 SL II is also available in Nikon F (FX) mount.
Focal Range
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.
On the other hand, the Voigtlander 58mm F1.4 SL II is a prime lens with fixed focal lenght of 58mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 87mm.