The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony FE 100mm F2.8 Macro and the Venus 15mm f4.5 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. Sony FE 100mm F2.8 Macro is the longer of the two lenses at 148mm. The Venus 15mm f4.5 with a length of 48mm, is 100mm shorter. Besides being longer, the Sony FE 100mm F2.8 Macro also has a larger diameter of 81mm compared to the Venus 15mm f4.5's 70mm 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. Venus 15mm f4.5 weighs 308g, 52% (338g) lighter than the Sony FE 100mm F2.8 Macro's weight of 646g.
Filter Threads
The Sony FE 100mm F2.8 Macro has a filter size of 67mm whereas the Venus 15mm f4.5 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 67mm filters that we recommend you to consider for the Sony FE 100mm F2.8 Macro:
And these are the 62mm filters that we recommend for the Venus 15mm f4.5:
Lens Mounts
The Sony FE 100mm F2.8 Macro has the Sony E lens mount whereas the Venus 15mm f4.5 has the Leica L lens mount. Some of the latest released cameras that are compatible with these mounts are Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount and Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount.
Venus 15mm f4.5 is also available in Sony E , Nikon Z and Canon RF mounts.
Focal Range
Sony FE 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 15mm f4.5 is a prime lens with fixed focal lenght of 15mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 22.5mm.