The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Yongnuo 33mm F1.4S E and the Zeiss Touit 50mm f2.8 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. Zeiss Touit 50mm f2.8 is the longer of the two lenses at 91mm. The Yongnuo 33mm F1.4S E with a length of 87mm, is 4mm shorter. On the other hand, the Yongnuo 33mm F1.4S E has a larger diameter of 69mm compared to the Zeiss Touit 50mm f2.8'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. Zeiss Touit 50mm f2.8 weighs 290g, 21% (80g) lighter than the Yongnuo 33mm F1.4S E's weight of 370g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Sony E Mount for size comparison purposes.
Standard Lenses in Sony E Mount for Size Comparison
Filter Threads
The Yongnuo 33mm F1.4S E has a filter size of 58mm whereas the Zeiss Touit 50mm f2.8 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 Yongnuo 33mm F1.4S E:
And these are the 52mm filters that we recommend for the Zeiss Touit 50mm f2.8:
Lens Mounts
Both the Yongnuo 33mm F1.4S E and the Zeiss Touit 50mm f2.8 has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony ZV-E10 II, Sony A6700 and Sony FX30.
Zeiss Touit 50mm f2.8 is also available in Fujifilm X mount.
Focal Range
Yongnuo 33mm F1.4S E is a prime lens with fixed focal lenght of 33mm which has an effective (full-frame 35mm equivalent) focal range of
49.5mm when used on a APS-C / DX format camera.
On the other hand, the Zeiss Touit 50mm f2.8 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.