The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sony E 70-350mm F4.5-6.3 G and the Canon 400mm f4.0 DO 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 400mm f4.0 DO IS USM is the longer of the two lenses at 233mm. The Sony E 70-350mm F4.5-6.3 G with a length of 142mm, is 91mm shorter. Besides being longer, the Canon 400mm f4.0 DO IS USM also has a larger diameter of 128mm compared to the Sony E 70-350mm F4.5-6.3 G's 77mm 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. Sony E 70-350mm F4.5-6.3 G weighs 625g, which means it is 1315g (67%) lighter than the Canon 400mm f4.0 DO IS USM which has a weight of 1940g.
Filter Threads
The Sony E 70-350mm F4.5-6.3 G has a filter size of 67mm whereas the Canon 400mm f4.0 DO IS USM has a 52mm 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 Sony E 70-350mm F4.5-6.3 G:
And these are the 52mm filters that we recommend for the Canon 400mm f4.0 DO IS USM:
Lens Mounts
The Sony E 70-350mm F4.5-6.3 G has the Sony E lens mount whereas the Canon 400mm f4.0 DO IS USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Sony ZV-E10 II, Sony A6700 and Sony FX30 for the Sony E Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Focal Range
Sony E 70-350mm F4.5-6.3 G has a focal range of 70-350mm and
5.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
105-525mm when used on a APS-C / DX format camera.
On the other hand, the Canon 400mm f4.0 DO IS 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.
