The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Zeiss Touit 50mm f2.8 and the Sony FE 55mm F1.8 ZA CZ for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Zeiss Touit 50mm f2.8 is the longer of the two lenses at 91mm. The Sony FE 55mm F1.8 ZA CZ with a length of 71mm is 20mm shorter. Besides being longer, the Zeiss Touit 50mm f2.8 also has a larger diameter of 65mm compared to Sony FE 55mm F1.8 ZA CZ's 64mm diameter.
Weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Sony FE 55mm F1.8 ZA CZ weighs 281g, 3% (9g) lighter than the Zeiss Touit 50mm f2.8's weight of 290g.
Below you can find the dimension and weight table of the 'Standard Prime Lenses in Sony E Mount for size comparison purposes.
Standard Prime Lenses in Sony E Mount for Size Comparison
Lens Mounts
Both Zeiss Touit 50mm f2.8 and Sony FE 55mm F1.8 ZA CZ has the same Sony E lens mount. Some of the latest released cameras that are compatible with the Sony E lenses are Sony FX30, Sony ZV-E10 and Sony A6600.
Zeiss Touit 50mm f2.8 is also available in Fujifilm X mount.
Focal Range
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. 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 an 35mm (FF) equivalent of 82.5mm.