The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon EF 400mm F2.8L IS III USM and the Canon EF 85mm F1.4L IS 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. Canon EF 400mm F2.8L IS III USM is the longer of the two lenses at 343mm. The Canon EF 85mm F1.4L IS USM with a length of 105mm, is 238mm shorter. Besides being longer, the Canon EF 400mm F2.8L IS III USM also has a larger diameter of 163mm compared to the Canon EF 85mm F1.4L IS USM's 87mm diameter.
Below you can find a scaled side-by-side image of Canon EF 400mm F2.8L IS III USM and Canon EF 85mm F1.4L IS USM to get a better idea of how their sizes compare in real life.
Comparison image of the Canon EF 400mm F2.8L IS III USM and the Canon EF 85mm F1.4L IS USM Size and Weight 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 EF 85mm F1.4L IS USM weighs 950g, 66% (1890g) lighter than the Canon EF 400mm F2.8L IS III USM's weight of 2840g.
Filter Threads
The Canon EF 400mm F2.8L IS III USM has a filter size of 52mm whereas the Canon EF 85mm F1.4L IS USM has a 77mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Canon EF 400mm F2.8L IS III USM:
And these are the 77mm filters that we recommend for the Canon EF 85mm F1.4L IS USM:
Lens Mounts
Both the Canon EF 400mm F2.8L IS III USM and the Canon EF 85mm F1.4L IS USM has the same Canon EF lens mount . Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF , Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K .
Focal Range
Canon EF 400mm F2.8L IS III USM is a prime lens with fixed focal lenght of 400mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
640mm .
On the other hand, the Canon EF 85mm F1.4L IS 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 .
