The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50mm F2.8 EX DG Macro 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 Sigma 50mm F2.8 EX DG Macro with a length of 67mm, is 2mm shorter. On the other hand, the Sigma 50mm F2.8 EX DG Macro has a larger diameter of 71mm compared to the Carl Zeiss Planar T1,4/50's 66mm 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. Sigma 50mm F2.8 EX DG Macro weighs 320g, which means it is 30g (8%) lighter than the Carl Zeiss Planar T1,4/50 which has a weight of 350g.
Filter Threads
The Sigma 50mm F2.8 EX DG Macro has a filter size of 55mm whereas the Carl Zeiss Planar T1,4/50 has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sigma 50mm F2.8 EX DG Macro:
And these are the 58mm filters that we recommend for the Carl Zeiss Planar T1,4/50:
Lens Mounts
Both the Sigma 50mm F2.8 EX DG Macro and the Carl Zeiss Planar T1,4/50 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.
Sigma 50mm F2.8 EX DG Macro is also available in Canon EF , Sony Alpha, Sigma SA and Nikon F (FX) mounts.
Carl Zeiss Planar T1,4/50 is also available in Canon EF and Nikon F (FX) mounts.
Focal Range
Both lenses have the same focal range of
50mm but while Sigma 50mm F2.8 EX DG Macro has the fastest aperture of
F2.8, the Carl Zeiss Planar T1,4/50's widest aperture value is
F1.4.