The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 85mm F1.4 EF and the Venus 100mm F2.8 2X Ultra Macro 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 100mm F2.8 2X Ultra Macro is the longer of the two lenses at 125mm. The Samyang AF 85mm F1.4 EF with a length of 72mm, is 53mm shorter. Besides being longer, the Venus 100mm F2.8 2X Ultra Macro also has a larger diameter of 72mm compared to the Samyang AF 85mm F1.4 EF's 61mm diameter.
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Below you can find a scaled side-by-side image of Samyang AF 85mm F1.4 EF and Venus 100mm F2.8 2X Ultra Macro 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. Samyang AF 85mm F1.4 EF weighs 485g, which means it is 153g (23%) lighter than the Venus 100mm F2.8 2X Ultra Macro which has a weight of 638g.
Filter Threads
The Samyang AF 85mm F1.4 EF has a filter size of 77mm whereas the Venus 100mm F2.8 2X Ultra Macro 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 77mm filters that we recommend you to consider for the Samyang AF 85mm F1.4 EF:
And these are the 67mm filters that we recommend for the Venus 100mm F2.8 2X Ultra Macro:
Lens Mounts
Both the Samyang AF 85mm F1.4 EF and the Venus 100mm F2.8 2X Ultra Macro 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 100mm F2.8 2X Ultra Macro is also available in Nikon F (FX) , Pentax KAF2 and Sony E mounts.
Focal Range
Samyang AF 85mm F1.4 EF 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.
On the other hand, the Venus 100mm F2.8 2X Ultra Macro is a prime lens with fixed focal lenght of 100mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 160mm.