The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 50mm F1.8 OSS and the Carl Zeiss Biogon T2,8/21 ZM 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 Biogon T2,8/21 ZM is the longer of the two lenses at 75mm. The Sony E 50mm F1.8 OSS with a length of 62mm, is 13mm shorter. On the other hand, the Sony E 50mm F1.8 OSS has a larger diameter of 62mm compared to the Carl Zeiss Biogon T2,8/21 ZM's 53mm 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. Sony E 50mm F1.8 OSS weighs 202g, which means it is 78g (27%) lighter than the Carl Zeiss Biogon T2,8/21 ZM which has a weight of 280g.
Filter Threads
The Sony E 50mm F1.8 OSS has a filter size of 49mm whereas the Carl Zeiss Biogon T2,8/21 ZM has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 49mm filters that we recommend you to consider for the Sony E 50mm F1.8 OSS:
And these are the 46mm filters that we recommend for the Carl Zeiss Biogon T2,8/21 ZM:
Lens Mounts
The Sony E 50mm F1.8 OSS has the Sony E lens mount whereas the Carl Zeiss Biogon T2,8/21 ZM has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount and Leica M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Focal Range
Sony E 50mm F1.8 OSS is a prime lens with fixed focal lenght of 50mm which has an effective (full-frame 35mm equivalent) focal range of
75mm when used on a APS-C / DX format camera.
On the other hand, the Carl Zeiss Biogon T2,8/21 ZM is a prime lens with fixed focal lenght of 21mm.
