Canon has announced two new super-telephoto lenses for the RF mount: the RF800mm f/5.6L IS USM and RF1200mm f/8L IS USM. Unlike what was the case with the 400mm f/2.8L and 600mm f/4L primes launched last year, these two new lenses are unique.
A new patent filed by Canon Japan shows multiple optical formulas for an RF 50mm f/1.4 and f/1.8 design as well as a new RF 35mm f/1.4. The patents deal with increasing focusing speed when using lenses with large diameter elements.
Canon News has uncovered a new patent out of Japan that shows some of Canon's potential plans for the RF lens mount. According to the patent, Canon is looking into releasing some more affordable RF prime lenses like an 85mm f/1.8 and a 100mm f/2.8.
Portrait photographer and YouTuber Alex Barrera recently went out and shot a full side-by-side comparison of the Canon RF 85mm f/1.2L and the RF 85mm f/1.2L DS lenses. His sample photos can help you decide if Canon's "Defocus Smoothing" is worth the loss of light and the extra $300 it'll cost you.
Multiple Canon EOS R users on both the Fred Miranda and DPReview forums are reporting front focusing issues with their brand new RF 70-200mm f/2.8 lenses, leading some to wonder if Canon has a widespread manufacturing issue on their hands.
Canon has officially released details of its RF lens Control Ring "Clicking Sound Modification Service." For $80, Canon will de-click any RF lens to make the Control Ring more suitable for video shooting.