The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 10-20mm F4 L IS STM 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 10-20mm F4 L IS STM with a length of 112mm, is 28mm shorter. Besides being longer, the Canon RF 28-70mm F2L USM also has a larger diameter of 104mm compared to the Canon RF 10-20mm F4 L IS STM's 84mm diameter.
Below you can find a scaled side-by-side image of Canon RF 10-20mm F4 L IS STM and Canon RF 28-70mm F2L USM to get a better idea of how their sizes compare in real life.
Comparison image of the Canon RF 10-20mm F4 L IS STM and the Canon RF 28-70mm F2L 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 RF 10-20mm F4 L IS STM weighs 570g, which means it is 860g (60%) lighter than the Canon RF 28-70mm F2L USM which has a weight of 1430g.
Lens Mounts
Both the Canon RF 10-20mm F4 L IS STM 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 R6 V , Canon R6 III and Canon C50 .
Focal Range
Canon RF 10-20mm F4 L IS STM has a focal range of 10-20mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
15 - 30mm .
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 .
