The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm F1.4 DC HSM and the Sony CZ T* 50mm F1.4 ZA SSM 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 CZ T* 50mm F1.4 ZA SSM is the longer of the two lenses at 72mm. The Sigma 30mm F1.4 DC HSM with a length of 63mm, is 9mm shorter. Besides being longer, the Sony CZ T* 50mm F1.4 ZA SSM also has a larger diameter of 81mm compared to the Sigma 30mm F1.4 DC HSM's 74mm 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. Sigma 30mm F1.4 DC HSM weighs 435g, which means it is 83g (16%) lighter than the Sony CZ T* 50mm F1.4 ZA SSM which has a weight of 518g.
Filter Threads
The Sigma 30mm F1.4 DC HSM has a filter size of 62mm whereas the Sony CZ T* 50mm F1.4 ZA SSM has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 62mm filters that we recommend you to consider for the Sigma 30mm F1.4 DC HSM:
And these are the 72mm filters that we recommend for the Sony CZ T* 50mm F1.4 ZA SSM:
Lens Mounts
The Sigma 30mm F1.4 DC HSM has the Canon EF lens mount whereas the Sony CZ T* 50mm F1.4 ZA SSM has the Sony Alpha lens mount. Some of the latest released cameras that are compatible with these mounts are Canon T8i, Canon 90D and Canon SL3 for the Canon EF Mount and Sony A99 II, Sony A68 and Sony A77 II for the Sony Alpha Mount.
Sigma 30mm F1.4 DC HSM is also available in the Nikon F (DX) and Sigma SA mounts.
Focal Range
Sigma 30mm F1.4 DC HSM is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of
48mm when used on a APS-C / DX format camera.
On the other hand, the Sony CZ T* 50mm F1.4 ZA SSM 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.
