Here is a Canon patent application for a RF 70-400mm f/4.5-5.6L IS USM Lens. Designed for Canon full frame mirrorless camera system, this lens is the EOS R version of the budget-friendly telephoto zoom for the consumer market.
According to latest rumors, this super telephoto zoom lens is expected to be announced in the first half of 2020. Continue reading “Canon RF 70-400mm f/4.5-5.6L IS USM Lens Patent”