The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Tamron 10-24mm F3.5-4.5 Di II VC HLD and the Sigma 12-24mm F4 DG HSM 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. Sigma 12-24mm F4 DG HSM is the longer of the two lenses at 132mm. The Tamron 10-24mm F3.5-4.5 Di II VC HLD with a length of 85mm, is 47mm shorter. Besides being longer, the Sigma 12-24mm F4 DG HSM also has a larger diameter of 101mm compared to the Tamron 10-24mm F3.5-4.5 Di II VC HLD's 84mm diameter.
Below you can find a scaled side-by-side image of Tamron 10-24mm F3.5-4.5 Di II VC HLD and Sigma 12-24mm F4 DG HSM to get a better idea of how their sizes compare in real life.
Comparison image of the Tamron 10-24mm F3.5-4.5 Di II VC HLD and the Sigma 12-24mm F4 DG HSM Size and Weight 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. Tamron 10-24mm F3.5-4.5 Di II VC HLD weighs 440g, which means it is 711g (61%) lighter than the Sigma 12-24mm F4 DG HSM which has a weight of 1151g.
Lens Mounts
The Tamron 10-24mm F3.5-4.5 Di II VC HLD has the Canon EF-S lens mount whereas the Sigma 12-24mm F4 DG HSM has the Canon EF lens mount . Some of the latest released cameras that are compatible with these mounts are Canon T8i , Canon 90D and Canon SL3 for the Canon EF-S Mount and Blackmagic URSA 12K LF , Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Tamron 10-24mm F3.5-4.5 Di II VC HLD is also available in the Nikon F (DX) mount.
Sigma 12-24mm F4 DG HSM is also available in Sigma SA and Nikon F (FX) mounts.
Focal Range
Tamron 10-24mm F3.5-4.5 Di II VC HLD has a focal range of 10-24mm and
2.4X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
16-38.4mm when used on a APS-C / DX format camera.
On the other hand, the Sigma 12-24mm F4 DG HSM has a focal range of 12-24mm and 2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 19.2 - 38.4mm .