The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 30mm 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 an important deciding factor when comparing two lenses. Venus 33mm F0.95 CF APO is the longer of the two lenses at 83mm. The Sigma 30mm F1.4 C with a length of 73mm, is 10mm shorter. Besides being longer, the Venus 33mm F0.95 CF APO also has a larger diameter of 72mm compared to the Sigma 30mm F1.4 C's 65mm diameter.
The 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 30mm F1.4 C weighs 265g, which means it is 325g (55%) 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 Prime Lenses in Fujifilm X Mount for Size Comparison
Lens Mounts
Both the Sigma 30mm 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-T5, Fujifilm X-H2 and Fujifilm X-H2S.
Sigma 30mm F1.4 C is also available in Sony E and Micro Four Thirds mounts.
Venus 33mm F0.95 CF APO is also available in Four Thirds and Nikon Z mounts.
Focal Range
Sigma 30mm F1.4 C is a prime lens with fixed focal lenght of 30mm which has an effective (full-frame 35mm equivalent) focal range of 45mm when used on a APS-C / DX format camera. 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.