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 Canon 14mm f2.8L 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 17-40mm f4.0L USM is the longer of the two lenses at 97mm. The Canon 14mm f2.8L USM with a length of 89mm, is 8mm shorter. Besides being longer, the Canon 17-40mm f4.0L USM also has a larger diameter of 84mm compared to the Canon 14mm f2.8L USM's 77mm 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 17-40mm f4.0L USM weighs 500g, which means it is 60g (10%) lighter than the Canon 14mm f2.8L USM which has a weight of 560g.
Lens Mounts
Both the Canon 17-40mm f4.0L USM and the Canon 14mm f2.8L USM has the same Canon EF lens mount. Some of the latest released cameras that are compatible with the Canon EF lenses are Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K.
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 Canon 14mm f2.8L USM is a prime lens with fixed focal lenght of 14mm. When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 22.4mm.
