The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 55mm F1.8 ZA CZ 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. Sony FE 55mm F1.8 ZA CZ is the longer of the two lenses at 71mm. The Sony FE 50mm F1.8 with a length of 60mm, is 11mm shorter. On the other hand, the Sony FE 50mm F1.8 has a larger diameter of 69mm compared to the Sony FE 55mm F1.8 ZA CZ's 64mm diameter.
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Below you can find a scaled side-by-side image of Sony FE 55mm F1.8 ZA CZ and Sony FE 50mm F1.8 to get a better idea of how their sizes compare in real life.
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, 33% (95g) lighter than the Sony FE 55mm F1.8 ZA CZ's weight of 281g.
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
Both the Sony FE 55mm F1.8 ZA CZ and the Sony FE 50mm F1.8 have the same Filter thread size of 49mm.
Below are links to the 49mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Sony FE 55mm F1.8 ZA CZ 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 A9 III, Sony A7C Mark II and Sony A7CR.
Focal Range
Sony FE 55mm F1.8 ZA CZ is a prime lens with fixed focal lenght of 55mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
82.5mm.
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.