The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Venus 100mm F2.8 2X Ultra Macro and the Leica Macro-Elmar-M 90mm f4 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 Leica Macro-Elmar-M 90mm f4 with a length of 41mm, is 84mm shorter. Besides being longer, the Venus 100mm F2.8 2X Ultra Macro also has a larger diameter of 72mm compared to the Leica Macro-Elmar-M 90mm f4's 52mm 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. Leica Macro-Elmar-M 90mm f4 weighs 240g, 62% (398g) lighter than the Venus 100mm F2.8 2X Ultra Macro's weight of 638g.
Filter Threads
The Venus 100mm F2.8 2X Ultra Macro has a filter size of 67mm whereas the Leica Macro-Elmar-M 90mm f4 has a 39mm 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 100mm F2.8 2X Ultra Macro:
And these are the 39mm filters that we recommend for the Leica Macro-Elmar-M 90mm f4:
Lens Mounts
The Venus 100mm F2.8 2X Ultra Macro has the Sony E lens mount whereas the Leica Macro-Elmar-M 90mm f4 has the Leica M 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 M EV1, Leica M11-D and Pixii Max for the Leica M Mount.
Venus 100mm F2.8 2X Ultra Macro is also available in the Canon EF , Nikon F (FX) and Pentax KAF2 mounts.
Focal Range
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 1.5x crop, it provides a 35mm (FF) equivalent of
150mm.
On the other hand, the Leica Macro-Elmar-M 90mm f4 is a prime lens with fixed focal lenght of 90mm.