The Canon RF 800mm f11 IS STM is a very unique supertelephoto lens: it’s extremely lightweight for a lens this long- barely 1.3kg- and features full autofocus and image stabilizer capabilities. What’s missing? Well, the maximum aperture is f11,which is not exactly blazing fast, so low-light shooting is out. Also, speakingof f11, the only aperture is f11. Excellent image quality, though, and it’s nice to be able to carry around a supertelephoto lens this long without renting a donkey. In excellent condition, with optional (but very useful) case.