24-70mm f/2.8 lenses are the workhorses of choice for a huge range of photographers and filmmakers, as they offer a very versatile focal length range in tandem with a wide maximum aperture. Nonetheless, not everyone needs that f/2.8 aperture, and if you are willing to exchange that for f/4, you can get even more focal length range at a reduced price. For Canon shooters, one such lens is the RF 24-105mm f/4L IS USM, and this great video review takes a look at the performance and image quality you can expect from it in practice.