The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon 17-40mm f4.0L USM and the Tokina 12-24mm f4 DX II 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 17-40mm f4.0L USM is the longer of the two lenses at 97mm. The Tokina 12-24mm f4 DX II with a length of 90mm, is 7mm shorter. On the other hand, there is no difference between the max diameters of these lenses, both coming at 84mm.
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 17-40mm f4.0L USM weighs 500g, which means it is 40g (7%) lighter than the Tokina 12-24mm f4 DX II which has a weight of 540g.
Filter Threads
Both the Canon 17-40mm f4.0L USM and the Tokina 12-24mm f4 DX II have the same Filter thread size of 77mm.
Below are links to the 77mm filters that we recommend you to consider for these lenses:
Lens Mounts
The Canon 17-40mm f4.0L USM has the Canon EF lens mount whereas the Tokina 12-24mm f4 DX II has the Nikon F (DX) lens mount. Some of the latest released cameras that are compatible with these mounts are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount and Nikon D3500, Nikon D7500 and Nikon D5600 for the Nikon F (DX) Mount.
Tokina 12-24mm f4 DX II is also available in Canon EF mount.
Focal Range
Canon 17-40mm f4.0L USM has a focal range of 17-40mm and
2.4X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of
27.2 - 64mm.
On the other hand, the Tokina 12-24mm f4 DX II has a focal range of 12-24mm and 2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of 18-36mm when used on a APS-C / DX format camera.
