The type of photography that you are planning to use is an important decision factor. Here we have evaluated the Canon RF 10-20mm F4 L IS STM and the Tokina Opera 16-28mm F2.8 FF 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. Tokina Opera 16-28mm F2.8 FF is the longer of the two lenses at 134mm. The Canon RF 10-20mm F4 L IS STM with a length of 112mm, is 22mm shorter. Besides being longer, the Tokina Opera 16-28mm F2.8 FF also has a larger diameter of 89mm compared to the Canon RF 10-20mm F4 L IS STM's 84mm 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 RF 10-20mm F4 L IS STM weighs 570g, which means it is 370g (39%) lighter than the Tokina Opera 16-28mm F2.8 FF which has a weight of 940g.
Lens Mounts
The Canon RF 10-20mm F4 L IS STM has the Canon RF lens mount whereas the Tokina Opera 16-28mm F2.8 FF has the Canon EF lens mount. Some of the latest released cameras that are compatible with these mounts are Canon R6 V, Canon R6 III and Canon C50 for the Canon RF Mount and Blackmagic URSA 12K LF, Z CAM E2-F6 II 6K and Z CAM E2-S6 II 6K for the Canon EF Mount.
Tokina Opera 16-28mm F2.8 FF is also available in Nikon F (FX) mount.
Focal Range
Canon RF 10-20mm F4 L IS STM has a focal range of 10-20mm and
2.0X zoom ratio . When it is mounted on an APS-C sensor camera with 1.5x crop, it provides a 35mm (FF) equivalent of
15 - 30mm.
On the other hand, the Tokina Opera 16-28mm F2.8 FF has a focal range of 16-28mm and 1.8X zoom ratio . When it is mounted on an APS-C sensor camera with 1.6x crop, it provides a 35mm (FF) equivalent of 25.6 - 44.8mm.
