The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Nikon Micro 40mm F2.8 and the Samyang 35mm F1.4 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 35mm F1.4 is the longer of the two lenses at 112mm. The Nikon Micro 40mm F2.8 with a length of 65mm, is 47mm shorter. On the other hand, the Nikon Micro 40mm F2.8 has a larger diameter of 69mm compared to the Samyang 35mm F1.4's 63mm 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. Nikon Micro 40mm F2.8 weighs 235g, which means it is 425g (64%) lighter than the Samyang 35mm F1.4 which has a weight of 660g.
Filter Threads
The Nikon Micro 40mm F2.8 has a filter size of 52mm whereas the Samyang 35mm F1.4 has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Nikon Micro 40mm F2.8:
And these are the 77mm filters that we recommend for the Samyang 35mm F1.4:
Lens Mounts
The Nikon Micro 40mm F2.8 has the Nikon F (DX) lens mount whereas the Samyang 35mm F1.4 has the Nikon F (FX) lens mount. Some of the latest released cameras that are compatible with these mounts are Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount and Nikon D6, Nikon D780 and Nikon D3500 for the Nikon F (FX) Mount.
Samyang 35mm F1.4 is also available in Canon EF , Four Thirds, Pentax KAF, Sony Alpha, Sony E and Samsung NX mounts.
Focal Range
Nikon Micro 40mm F2.8 is a prime lens with fixed focal lenght of 40mm which has an effective (full-frame 35mm equivalent) focal range of
60mm when used on a APS-C / DX format camera.
On the other hand, the Samyang 35mm F1.4 is a prime lens with fixed focal lenght of 35mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 52.5mm.