The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sirui Sniper 75mm f1.2 E and the Sigma 56mm F1.4 C 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. Sirui Sniper 75mm f1.2 E is the longer of the two lenses at 94mm. The Sigma 56mm F1.4 C with a length of 60mm, is 34mm shorter. Besides being longer, the Sirui Sniper 75mm f1.2 E also has a larger diameter of 80mm compared to the Sigma 56mm F1.4 C's 67mm 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 56mm F1.4 C weighs 280g, 39% (186g) lighter than the Sirui Sniper 75mm f1.2 E's weight of 466g.
Filter Threads
The Sirui Sniper 75mm f1.2 E has a filter size of 67mm whereas the Sigma 56mm F1.4 C has a 55mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Sirui Sniper 75mm f1.2 E:
And these are the 55mm filters that we recommend for the Sigma 56mm F1.4 C:
Lens Mounts
The Sirui Sniper 75mm f1.2 E has the Sony E lens mount whereas the Sigma 56mm F1.4 C has the Nikon Z lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount and RED Komodo-X 6K Z, Nikon Z50 II and Nikon Z30 for the Nikon Z Mount.
Sigma 56mm F1.4 C is also available in Fujifilm X and Canon RF mounts.
Focal Range
Sirui Sniper 75mm f1.2 E is a prime lens with fixed focal lenght of 75mm which has an effective (full-frame 35mm equivalent) focal range of
112.5mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 56mm F1.4 C is a prime lens with fixed focal lenght of 56mm which has an effective (full-frame 35mm equivalent) focal range of 84mm when used on a APS-C / DX format camera.
