The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 14-35mm F4L IS USM and the Canon RF 28-70mm F2L 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 28-70mm F2L USM is the longer of the two lenses at 140mm. The Canon RF 14-35mm F4L IS USM with a length of 100mm, is 40mm shorter. Besides being longer, the Canon RF 28-70mm F2L USM also has a larger diameter of 104mm compared to the Canon RF 14-35mm F4L IS USM's 84mm diameter.
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Below you can find a scaled side-by-side image of Canon RF 14-35mm F4L IS USM and Canon RF 28-70mm F2L USM to get a better idea of how their sizes compare in real life.
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 RF 14-35mm F4L IS USM weighs 540g, which means it is 890g (62%) lighter than the Canon RF 28-70mm F2L USM which has a weight of 1430g.
Filter Threads
The Canon RF 14-35mm F4L IS USM has a filter size of 77mm whereas the Canon RF 28-70mm F2L USM has a 95mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 77mm filters that we recommend you to consider for the Canon RF 14-35mm F4L IS USM:
And these are the 95mm filters that we recommend for the Canon RF 28-70mm F2L USM:
Lens Mounts
Both the Canon RF 14-35mm F4L IS USM and the Canon RF 28-70mm F2L USM has the same Canon RF lens mount. Some of the latest released cameras that are compatible with the Canon RF lenses are Canon R100, Canon R8 and Canon R50.
Focal Range
Canon RF 14-35mm F4L IS USM has a focal range of 14-35mm and
2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
22.4 - 56mm.
On the other hand, the Canon RF 28-70mm F2L USM has a focal range of 28-70mm and 2.5X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 44.8 - 112mm.