Specification :
In addition, this lens can achieve image stabilization correction of 6.0 CIPA standard stops* with coordinated IS. The front lens element is coated in Fluorine for added durability, so you can easily wipe away oils and fingerprints. Canon SSC (Super Spectra Coating, and advanced ASC (Air Sphere Coating) and SWC (Subwavelength Structure Coating) technologies to help reduce flare, ghosting and other aberrations. The optical quality of this lens is impressive with 16 elements in 12 groups, including one super UD element, three UD glass elements, and three aspheric elements. This lens also has a minimum focus distance of just under 10 inches at all focal lengths.
The RF10-20mm F4 L IS STM lens has a lot of advantages and features when it comes to video. First, you can take full advantage of the 10mm focal length on full-frame cameras, and you can even shoot 4K 60p without crop mode. If you are shooting on an APS-C camera, you’ll have access to wider angles than you ever have before (coverage equivalent to a 16-32mm lens). Another video advantage is the fixed f/4 aperture, minimizing exposure changes while zooming.