The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus Argus 35mm F0.95 FF and the Sigma 105mm F2.8 EX DG OS HSM 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. Sigma 105mm F2.8 EX DG OS HSM is the longer of the two lenses at 127mm. The Venus Argus 35mm F0.95 FF with a length of 103mm, is 24mm shorter. Besides being longer, the Sigma 105mm F2.8 EX DG OS HSM also has a larger diameter of 78mm compared to the Venus Argus 35mm F0.95 FF's 77mm 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 105mm F2.8 EX DG OS HSM weighs 726g, 3% (29g) lighter than the Venus Argus 35mm F0.95 FF's weight of 755g.
Filter Threads
The Venus Argus 35mm F0.95 FF has a filter size of 72mm whereas the Sigma 105mm F2.8 EX DG OS HSM 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 72mm filters that we recommend you to consider for the Venus Argus 35mm F0.95 FF:
And these are the 62mm filters that we recommend for the Sigma 105mm F2.8 EX DG OS HSM:
Lens Mounts
The Venus Argus 35mm F0.95 FF has the Canon RF lens mount whereas the Sigma 105mm F2.8 EX DG OS HSM has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R6 V, Canon R6 III and Canon C50 for the Canon RF Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Venus Argus 35mm F0.95 FF is also available in the Nikon Z and Sony E mounts.
Sigma 105mm F2.8 EX DG OS HSM is also available in Canon EF and Sigma SA mounts.
Focal Range
Venus Argus 35mm F0.95 FF is a prime lens with fixed focal lenght of 35mm.
On the other hand, the Sigma 105mm F2.8 EX DG OS HSM is a prime lens with fixed focal lenght of 105mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 157.5mm.