Canon RF 28-70mm F2L USM is an Auto Focus (AF) Standard Zoom lens with 35mm FF max sensor coverage. When mounted on a 35mm FF sensor camera, it will give you an FF equivalent focal range of 28 - 70mm. Providing a max aperture of f2 at 28mm, this lens is remarkably fast on wide end. Even better, having an aperture of f2 on tele end, this lens is exceptionally fast through out its range.
Canon RF 28-70mm F2L USM is weather sealed which makes it an ideal lens for outdoor use, especially when coupled with a weather sealed camera body.