The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 56mm F1.4 C and the Venus 33mm F0.95 CF APO 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. Venus 33mm F0.95 CF APO is the longer of the two lenses at 83mm. The Sigma 56mm F1.4 C with a length of 60mm, is 23mm shorter. Besides being longer, the Venus 33mm F0.95 CF APO also has a larger diameter of 72mm 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, which means it is 310g (52%) lighter than the Venus 33mm F0.95 CF APO which has a weight of 590g.
Below you can find the dimension and weight table of the Standard Prime Lenses in Fujifilm X Mount for size comparison purposes.
Standard Lenses in Fujifilm X Mount for Size Comparison
Filter Threads
The Sigma 56mm F1.4 C has a filter size of 55mm whereas the Venus 33mm F0.95 CF APO has a 62mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 55mm filters that we recommend you to consider for the Sigma 56mm F1.4 C:
And these are the 62mm filters that we recommend for the Venus 33mm F0.95 CF APO:
Lens Mounts
Both the Sigma 56mm F1.4 C and the Venus 33mm F0.95 CF APO has the same Fujifilm X lens mount. Some of the latest released cameras that are compatible with the Fujifilm X lenses are Fujifilm X-S20, Fujifilm X-T5 and Fujifilm X-H2.
Sigma 56mm F1.4 C is also available in Nikon Z mount.
Venus 33mm F0.95 CF APO is also available in Four Thirds and Nikon Z mounts.
Focal Range
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.
On the other hand, the Venus 33mm F0.95 CF APO is a prime lens with fixed focal lenght of 33mm which has an effective (full-frame 35mm equivalent) focal range of 49.5mm when used on a APS-C / DX format camera.