The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony 100mm F2.8 Macro and the Venus 105mm F2 for their suitability to various photography scenarios:
Size and Weight Comparison
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. Sony 100mm F2.8 Macro weighs 505g, which means it is 240g (32%) lighter than the Venus 105mm F2 which has a weight of 745g.
Filter Threads
The Sony 100mm F2.8 Macro has a filter size of 55mm whereas the Venus 105mm F2 has a 67mm 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 Sony 100mm F2.8 Macro:
And these are the 67mm filters that we recommend for the Venus 105mm F2:
Lens Mounts
Both the Sony 100mm F2.8 Macro and the Venus 105mm F2 has the same Sony Alpha lens mount. Some of the latest released cameras that are compatible with the Sony Alpha lenses are Sony A99 II, Sony A68 and Sony A77 II.
Venus 105mm F2 is also available in Sony E , Canon EF, Nikon F (FX) and Pentax KAF2 mounts.
Focal Range
Sony 100mm F2.8 Macro is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
150mm.
On the other hand, the Venus 105mm F2 is a prime lens with fixed focal lenght of 105mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 157.5mm.