Canon has impressed us time and again with their RF lenses, which push the boundaries of design and performance. Such superlative lenses are not cheap, however, and many photographers may be looking for more reasonably priced options. The RF 16mm f/2.8 STM is one such option, and it is quite portable on top of that, and this excellent video review takes a look at the kind of performance and image quality you can expect from it in practice.