The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 56mm F1.4 DC DN C and the Sony Zeiss FE 50mm F1.4 ZA for their suitability to various photography scenarios:
Size and Weight Comparison
Size of a lens is an important deciding factor when comparing two lenses.Sony Zeiss FE 50mm F1.4 ZA is the longer of the two lenses at 108mm. The Sigma 56mm F1.4 DC DN C with a length of 60mm is 48mm shorter. Besides being longer, the Sony Zeiss FE 50mm F1.4 ZA also has a larger diameter of 84mm compared to Sigma 56mm F1.4 DC DN C's 67mm 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. Sigma 56mm F1.4 DC DN C weighs 280g, which means it is 498g (64%) lighter than the Sony Zeiss FE 50mm F1.4 ZA which has a weight of 778g.
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
Both Sigma 56mm F1.4 DC DN C and Sony Zeiss FE 50mm F1.4 ZA 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.
Sigma 56mm F1.4 DC DN C is also available in Micro Four Thirds and Leica L mounts.
Sigma 56mm F1.4 DC DN C is a prime lens with fixed focal lenght of 56mm which has a 35mm equivalent focal range of 84mm when used on a APS-C / DX format camera. Sony Zeiss FE 50mm F1.4 ZA 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 an 35mm (FF) equivalent of 75mm.