Canon has been releasing some mightily impressive lenses the last few years, but two of the more unique options we have seen are the RF 600mm f/11 IS STM and RF 800mm f/11 IS STM. They are quite affordable, however, offering photographers the chance to use extreme focal lengths without breaking the bank. How do they hold up in practice? This great video review takes a look at both of the lenses and the images they produce.