The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang AF 75mm F1.8 FE and the Leica Summarit-M 75mm F2.4 ASPH 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. Samyang AF 75mm F1.8 FE is the longer of the two lenses at 69mm. The Leica Summarit-M 75mm F2.4 ASPH with a length of 61mm, is 8mm shorter. Besides being longer, the Samyang AF 75mm F1.8 FE also has a larger diameter of 65mm compared to the Leica Summarit-M 75mm F2.4 ASPH's 55mm diameter.
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Below you can find a scaled side-by-side image of Samyang AF 75mm F1.8 FE and Leica Summarit-M 75mm F2.4 ASPH 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 75mm F1.8 FE weighs 230g, which means it is 95g (29%) lighter than the Leica Summarit-M 75mm F2.4 ASPH which has a weight of 325g.
Filter Threads
The Samyang AF 75mm F1.8 FE has a filter size of 58mm whereas the Leica Summarit-M 75mm F2.4 ASPH has a 46mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 58mm filters that we recommend you to consider for the Samyang AF 75mm F1.8 FE:
And these are the 46mm filters that we recommend for the Leica Summarit-M 75mm F2.4 ASPH:
Lens Mounts
The Samyang AF 75mm F1.8 FE has the Sony E lens mount whereas the Leica Summarit-M 75mm F2.4 ASPH has the Leica M lens mount. Some of the latest released cameras that are compatible with these mounts are Sony A9 III, Sony A7C Mark II and Sony A7CR for the Sony E Mount and Leica M11 Monochrome, Leica M11 and Leica M10 for the Leica M Mount.
Focal Range
Both lenses have the same focal range of
75mm but while Samyang AF 75mm F1.8 FE has the fastest aperture of
F1.8, the Leica Summarit-M 75mm F2.4 ASPH's widest aperture value is
F2.4.