In an interview with Mynavi News, Canon's Kengo Iezuka says that not only were the 800mm and 600mm f/11 lenses possible because of mirrorless design, but the success of these two lenses may lead to additional similarly-designed primes.
The good people at Lensrentals are at it again. Using a combination of tools, expertise, and sheer moxie, they've broken into one of the most interesting lenses to be released by Canon in recent memory: the fixed-aperture RF 600mm f/11 IS STM.
The two strangest lenses Canon is reportedly going to launch on Thursday are the RF 600mm f/11 and the RF 800mm f/11. Now, we have our first leaked photos to show us why exactly Canon has decided to make these lenses so slow. As expected: they're incredibly small and hand-holdable.