The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 28mm f2.8 IS USM and the Canon 24mm f2.8 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 24mm f2.8 IS USM is the longer of the two lenses at 56mm. The Canon 28mm f2.8 IS USM with a length of 52mm, is 4mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 68mm.
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 28mm f2.8 IS USM weighs 260g, which means it is 20g (7%) lighter than the Canon 24mm f2.8 IS USM which has a weight of 280g.
Below you can find the dimension and weight table of the Wideangle Prime Lenses in Canon EF Mount for size comparison purposes.
Wideangle Lenses in Canon EF Mount for Size Comparison
Filter Threads
Both the Canon 28mm f2.8 IS USM and the Canon 24mm f2.8 IS USM have the same Filter thread size of 58mm.
Below are links to the 58mm filters that we recommend you to consider for these lenses:
Lens Mounts
Both the Canon 28mm f2.8 IS USM and the Canon 24mm f2.8 IS USM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Canon 1D X III, Canon 6D MII and Canon 5D MIV.
Focal Range
Canon 28mm f2.8 IS USM is a prime lens with fixed focal lenght of 28mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
44.8mm.
On the other hand, the Canon 24mm f2.8 IS USM is a prime lens with fixed focal lenght of 24mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 38.4mm.