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 65mm F2 DG DN 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. Mitakon 80mm f1.6 XCD is the longer of the two lenses at 83mm. The Sigma 65mm F2 DG DN with a length of 75mm, is 8mm shorter. Besides being longer, the Mitakon 80mm f1.6 XCD also has a larger diameter of 83mm compared to the Sigma 65mm F2 DG DN's 72mm 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 65mm F2 DG DN weighs 405g, 55% (495g) 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 65mm F2 DG DN has a 62mm 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 62mm filters that we recommend for the Sigma 65mm F2 DG DN:
Lens Mounts
The Mitakon 80mm f1.6 XCD has the Fujifilm G lens mount whereas the Sigma 65mm F2 DG DN has the Sony E 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 Sony FX5, Sony A7R VI and Sony A7 V for the Sony E Mount.
Sigma 65mm F2 DG DN is also available in Leica L mount.
Focal Range
Mitakon 80mm f1.6 XCD is a prime lens with fixed focal lenght of 89mm.
On the other hand, the Sigma 65mm F2 DG DN is a prime lens with fixed focal lenght of 65mm. When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of 97.5mm.