The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 400mm f2.8L IS II USM and the Canon 35-350mm f3.5-5.6L 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 400mm f2.8L IS II USM is the longer of the two lenses at 343mm. The Canon 35-350mm f3.5-5.6L USM with a length of 167mm, is 176mm shorter. Besides being longer, the Canon 400mm f2.8L IS II USM also has a larger diameter of 163mm compared to the Canon 35-350mm f3.5-5.6L USM's 85mm 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 35-350mm f3.5-5.6L USM weighs 1385g, 64% (2465g) lighter than the Canon 400mm f2.8L IS II USM's weight of 3850g.
Filter Threads
The Canon 400mm f2.8L IS II USM has a filter size of 52mm whereas the Canon 35-350mm f3.5-5.6L USM 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 52mm filters that we recommend you to consider for the Canon 400mm f2.8L IS II USM:
And these are the 72mm filters that we recommend for the Canon 35-350mm f3.5-5.6L USM:
Lens Mounts
Both the Canon 400mm f2.8L IS II USM and the Canon 35-350mm f3.5-5.6L 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 400mm f2.8L IS II 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 35-350mm f3.5-5.6L USM has a focal range of 35-350mm and 10.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 56 - 560mm.
