The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 105mm F2 and the Canon 85mm f1.2L II USM 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 105mm F2 is the longer of the two lenses at 99mm. The Canon 85mm f1.2L II USM with a length of 84mm, is 15mm shorter. On the other hand, the Canon 85mm f1.2L II USM has a larger diameter of 92mm compared to the Venus 105mm F2's 76mm diameter.
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Below you can find a scaled side-by-side image of Venus 105mm F2 and Canon 85mm f1.2L II USM to get a better idea of how their sizes compare in real life.
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. Venus 105mm F2 weighs 745g, which means it is 280g (27%) lighter than the Canon 85mm f1.2L II USM which has a weight of 1025g.
Below you can find the dimension and weight table of the Telephoto Prime Lenses in Canon EF Mount for size comparison purposes.
Telephoto Lenses in Canon EF Mount for Size Comparison
Filter Threads
The Venus 105mm F2 has a filter size of 67mm whereas the Canon 85mm f1.2L II USM 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 67mm filters that we recommend you to consider for the Venus 105mm F2:
And these are the 72mm filters that we recommend for the Canon 85mm f1.2L II USM:
Lens Mounts
Both the Venus 105mm F2 and the Canon 85mm f1.2L II USM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Venus 105mm F2 is also available in Sony E , Nikon F (FX), Pentax KAF2 and Sony Alpha mounts.
Focal Range
Venus 105mm F2 is a prime lens with fixed focal lenght of 105mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
168mm.
On the other hand, the Canon 85mm f1.2L II USM is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 136mm.