The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 600mm F4L IS USM and the Canon EF 600mm F4L IS III 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 RF 600mm F4L IS USM is the longer of the two lenses at 472mm. The Canon EF 600mm F4L IS III USM with a length of 448mm, is 24mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 168mm.
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 600mm F4L IS III USM weighs 3050g, 1% (40g) lighter than the Canon RF 600mm F4L IS USM's weight of 3090g.
Filter Threads
Both the Canon RF 600mm F4L IS USM and the Canon EF 600mm F4L IS III USM have the same Filter thread size of 52mm.
Below are links to the 52mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Canon RF 600mm F4L IS USM has the Canon RF lens mount whereas the Canon EF 600mm F4L IS III USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R100, Canon R8 and Canon R50 for the Canon RF Mount and Canon 1D X III, Canon 6D MII and Canon 5D MIV for the Canon EF Mount.
Focal Range
Both lenses have the same focal range of
600mm and the fastest aperture of
F4.