A wide angle zoom lens is one of the most versatile out there, useful for a wide variety of scenarios in both photo and video work. For those who do not need the extra-wide aperture of an f/2.8 lens, an f/4 version can save a lot of bulk and money. Canon's RF 14-35mm f/4L IS USM lens features a wider focal length than most such zooms and adds image stabilization, and this great video review takes a look at the performance and image quality you can expect from it in practice.