The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Samyang 10mm f2.8 and the Nikon 18-35mm f3.5-4.5D IF ED 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. Nikon 18-35mm f3.5-4.5D IF ED is the longer of the two lenses at 83mm. The Samyang 10mm f2.8 with a length of 77mm, is 6mm shorter. On the other hand, the Samyang 10mm f2.8 has a larger diameter of 86mm compared to the Nikon 18-35mm f3.5-4.5D IF ED's 83mm 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 18-35mm f3.5-4.5D IF ED weighs 370g, 36% (210g) lighter than the Samyang 10mm f2.8's weight of 580g.
Lens Mounts
The Samyang 10mm f2.8 has the Nikon F (DX) lens mount whereas the Nikon 18-35mm f3.5-4.5D IF ED 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 10mm f2.8 is also available in the Canon EF , Canon EF-M, Fujifilm X, Four Thirds and Micro Four Thirds mounts.
Focal Range
Samyang 10mm f2.8 is a prime lens with fixed focal lenght of 10mm which has an effective (full-frame 35mm equivalent) focal range of
15mm when used on a APS-C / DX format camera.
On the other hand, the Nikon 18-35mm f3.5-4.5D IF ED has a focal range of 18-35mm and 1.9X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 27 - 52.5mm.