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 Sony FE 50mm F1.8 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. Yongnuo 33mm F1.4S E is the longer of the two lenses at 87mm. The Sony FE 50mm F1.8 with a length of 60mm, is 27mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 69mm.
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 FE 50mm F1.8 weighs 186g, 49% (184g) 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 Sony FE 50mm F1.8 has a 49mm 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 49mm filters that we recommend for the Sony FE 50mm F1.8:
Lens Mounts
Both the Yongnuo 33mm F1.4S E and the Sony FE 50mm F1.8 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.
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 Sony FE 50mm F1.8 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.
