The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Sigma 50-200mm F4-5.6 DC OS HSM and the Canon 90-300mm f4.5-5.6 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 90-300mm f4.5-5.6 USM is the longer of the two lenses at 115mm. The Sigma 50-200mm F4-5.6 DC OS HSM with a length of 102mm, is 13mm shorter. On the other hand, the Sigma 50-200mm F4-5.6 DC OS HSM has a larger diameter of 74mm compared to the Canon 90-300mm f4.5-5.6 USM's 71mm 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.
Filter Threads
The Sigma 50-200mm F4-5.6 DC OS HSM has a filter size of 55mm whereas the Canon 90-300mm f4.5-5.6 USM 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 55mm filters that we recommend you to consider for the Sigma 50-200mm F4-5.6 DC OS HSM:
And these are the 58mm filters that we recommend for the Canon 90-300mm f4.5-5.6 USM:
Lens Mounts
The Sigma 50-200mm F4-5.6 DC OS HSM has the Pentax KAF3 lens mount whereas the Canon 90-300mm f4.5-5.6 USM has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are , and for the Pentax KAF3 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 50-200mm F4-5.6 DC OS HSM is also available in the Canon EF , Sony Alpha, Sigma SA and Nikon F (DX) mounts.
Focal Range
Sigma 50-200mm F4-5.6 DC OS HSM has a focal range of 50-200mm and
4.0X zoom ratio which has an effective (full-frame 35mm equivalent) focal range of
75-300mm when used on a APS-C / DX format camera.
On the other hand, the Canon 90-300mm f4.5-5.6 USM has a focal range of 90-300mm and 3.3X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 144 - 480mm.
