The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 135mm f2.8 SF and the Canon 24mm f2.8 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 135mm f2.8 SF is the longer of the two lenses at 98mm. The Canon 24mm f2.8 with a length of 49mm, is 49mm shorter. Besides being longer, the Canon 135mm f2.8 SF also has a larger diameter of 69mm compared to the Canon 24mm f2.8's 68mm 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. Canon 24mm f2.8 weighs 270g, 30% (120g) lighter than the Canon 135mm f2.8 SF's weight of 390g.
Filter Threads
The Canon 135mm f2.8 SF has a filter size of 52mm whereas the Canon 24mm f2.8 has a 58mm diameter. Larger filters are generally more expensive than the smaller ones given all the other features are equal.
Below are links to the 52mm filters that we recommend you to consider for the Canon 135mm f2.8 SF:
And these are the 58mm filters that we recommend for the Canon 24mm f2.8:
Lens Mounts
Both the Canon 135mm f2.8 SF and the Canon 24mm f2.8 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 135mm f2.8 SF is a prime lens with fixed focal lenght of 135mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
216mm.
On the other hand, the Canon 24mm f2.8 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.