The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 10-20mm F3.5 EX DC HSM and the Canon 14mm f2.8L II 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 14mm f2.8L II USM is the longer of the two lenses at 94mm. The Sigma 10-20mm F3.5 EX DC HSM with a length of 88mm, is 6mm shorter. On the other hand, the Sigma 10-20mm F3.5 EX DC HSM has a larger diameter of 87mm compared to the Canon 14mm f2.8L II USM's 80mm 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. Sigma 10-20mm F3.5 EX DC HSM weighs 520g, which means it is 125g (19%) lighter than the Canon 14mm f2.8L II USM which has a weight of 645g.
Lens Mounts
The Sigma 10-20mm F3.5 EX DC HSM has the Sigma SA lens mount whereas the Canon 14mm f2.8L II USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Sigma SD1 Merrill, Sigma SD1 and for the Sigma SA Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Sigma 10-20mm F3.5 EX DC HSM is also available in the Canon EF , Pentax KAF3, Sony Alpha and Nikon F (DX) mounts.
Focal Range
Sigma 10-20mm F3.5 EX DC HSM has a focal range of 10-20mm and
2.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
15-30mm when used on a APS-C / DX format camera.
On the other hand, the Canon 14mm f2.8L II 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.
