Canon has patented an optical formula for an RF 200mm f/2L IS USM
The Canon EF 200 f/1.8L USM and EF 200mm f/2L IS USM…
Patent: Canon patents RF 200mm f/2L IS, RF 300mm f/2.8L IS and RF 500mm f/4L IS optical formulas
Canon is obviously working on RF mount versions of the legendary EF…
Patent: Canon RF 200mm f/2L IS USM and other Big White Lenses
It's no secret that Canon is going to announce a slew of…
