Canon News has uncovered a patent which details the optical formulas for a couple of super telephoto zooms, including an RF 70-400mm f/4.5-5.6L IS USM, Read more......
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Published By: Canonrumors - Friday, 20 September, 2019
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- Canon Patent Application: Ultra-wide RF 14-20mm F2.0 Canonrumors (Today) - It's been a slow month patent application-wise, unless, as I told Craig earlier, I start to talk about printer patent applications. No one wants to do that – including yours truly. In this patent application (JP2024-042622), Canon talks about some Ultra-wide full-frame zooms. Now, this is one area of Canon's...