Supertelephoto lenses are tremendously useful, but they can also be quite expensive. If you are willing to sacrifice having a super-wide maximum aperture, Canon's RF 200-800mm f/6.3-9 IS USM lens offers a lot of the flexibility of a supertelephoto lens without the stratospheric price. This great video review takes a look at the lens and the sort of performance and image quality you can expect from it in usage.