The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Mitakon 80mm f1.6 XCD and the Sigma 18-35mm F1.8 DC HSM 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. Sigma 18-35mm F1.8 DC HSM is the longer of the two lenses at 121mm. The Mitakon 80mm f1.6 XCD with a length of 83mm, is 38mm shorter. On the other hand, the Mitakon 80mm f1.6 XCD has a larger diameter of 83mm compared to the Sigma 18-35mm F1.8 DC HSM's 78mm 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. Sigma 18-35mm F1.8 DC HSM weighs 810g, 9% (90g) lighter than the Mitakon 80mm f1.6 XCD's weight of 900g.
Filter Threads
The Mitakon 80mm f1.6 XCD has a filter size of 77mm whereas the Sigma 18-35mm F1.8 DC HSM has a 72mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Mitakon 80mm f1.6 XCD:
And these are the 72mm filters that we recommend for the Sigma 18-35mm F1.8 DC HSM:
Lens Mounts
The Mitakon 80mm f1.6 XCD has the Fujifilm G lens mount whereas the Sigma 18-35mm F1.8 DC HSM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Hasselblad X2D II, Hasselblad X2D and Hasselblad X1D II for the Fujifilm G Mount and Canon T8i, Canon 90D and Canon SL3 for the Canon EF Mount.
Sigma 18-35mm F1.8 DC HSM is also available in Pentax KAF , Sony Alpha, Sigma SA and Nikon F (DX) mounts.
Focal Range
Mitakon 80mm f1.6 XCD is a prime lens with fixed focal lenght of 89mm.
On the other hand, the Sigma 18-35mm F1.8 DC HSM has a focal range of 18-35mm and 1.9X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 28.8-56mm when used on a APS-C / DX format camera.