The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 35mm F1.4 DG DN Art and the Canon 85mm f1.8 USM 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 35mm F1.4 DG DN Art is the longer of the two lenses at 110mm. The Canon 85mm f1.8 USM with a length of 72mm, is 38mm shorter. Besides being longer, the Sigma 35mm F1.4 DG DN Art also has a larger diameter of 76mm compared to the Canon 85mm f1.8 USM's 75mm 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. Canon 85mm f1.8 USM weighs 425g, 34% (220g) lighter than the Sigma 35mm F1.4 DG DN Art's weight of 645g.
Filter Threads
The Sigma 35mm F1.4 DG DN Art has a filter size of 67mm whereas the Canon 85mm f1.8 USM has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 67mm filters that we recommend you to consider for the Sigma 35mm F1.4 DG DN Art:
And these are the 58mm filters that we recommend for the Canon 85mm f1.8 USM:
Lens Mounts
The Sigma 35mm F1.4 DG DN Art has the Leica L lens mount whereas the Canon 85mm f1.8 USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Leica SL3-P, Panasonic S1 II and Panasonic S1 IIE for the Leica L Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Sigma 35mm F1.4 DG DN Art is also available in the Sony E mount.
Focal Range
Sigma 35mm F1.4 DG DN Art is a prime lens with fixed focal lenght of 35mm.
On the other hand, the Canon 85mm f1.8 USM is a prime lens with fixed focal lenght of 85mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 136mm.
