The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 300mm f6.3 and the Nikon 300mm f4D ED-IF for their suitability to various photography scenarios:
Size and Weight Comparison
The size of a lens is an important deciding factor when comparing two lenses. Nikon 300mm f4D ED-IF is the longer of the two lenses at 223mm. The Samyang 300mm f6.3 with a length of 74mm, is 149mm shorter. Besides being longer, the Nikon 300mm f4D ED-IF also has a larger diameter of 90mm compared to the Samyang 300mm f6.3's 65mm diameter.
The weight of a lens is as important as its external dimensions, especially if you are planning to hand hold your camera and lens combination for longer periods. Samyang 300mm f6.3 weighs 260g, which means it is 1180g (81%) lighter than the Nikon 300mm f4D ED-IF which has a weight of 1440g.
The Samyang 300mm f6.3 has the Nikon F (DX) lens mount whereas the Nikon 300mm f4D ED-IF 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 300mm f6.3 is also available in Canon EF , Four Thirds and Sony Alpha mounts.
Both lenses have the same focal range of 300mm but while Samyang 300mm f6.3 has the fastest aperture of F6.3, the Nikon 300mm f4D ED-IF's widest aperture value is F4.0.