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 Canon 35-80mm f4.0-5.6 III 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 Canon 35-80mm f4.0-5.6 III with a length of 64mm, is 5mm shorter. Besides being longer, the Carl Zeiss Planar T1,4/50 also has a larger diameter of 66mm compared to the Canon 35-80mm f4.0-5.6 III's 65mm 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. Canon 35-80mm f4.0-5.6 III weighs 175g, 50% (175g) lighter than the Carl Zeiss Planar T1,4/50's weight of 350g.
Filter Threads
The Carl Zeiss Planar T1,4/50 has a filter size of 58mm whereas the Canon 35-80mm f4.0-5.6 III has a 52mm 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 Carl Zeiss Planar T1,4/50:
And these are the 52mm filters that we recommend for the Canon 35-80mm f4.0-5.6 III:
Lens Mounts
Both the Carl Zeiss Planar T1,4/50 and the Canon 35-80mm f4.0-5.6 III has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K.
Carl Zeiss Planar T1,4/50 is also available in the Pentax KAF and Nikon F (FX) mounts.
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 1.6x crop, it provides a 35mm (FF) equivalent of
80mm.
On the other hand, the Canon 35-80mm f4.0-5.6 III has a focal range of 35-80mm and 2.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 56 - 128mm.