Richard CanonNews / Thursday, October 3, 2019 / Categories: Canon Patents Canon Patent Application: Canon RF 70-200mm, 70-240mm In this patent application Canon certainly appears to be focusing on the 70-200mm F2.8L IS USM that is coming out later this year for the Canon RF mount. Buried in this patent application is another intriguing lens; a 70-240mm F4.0. It stands to reason that Canon will also be looking at the F4 zoom trinity as it's very popular on the EF mount, so could Canon be looking at expanding the 70-200 F4 to 70-240? Focal length 72.10 131.78 242.00 F-number 4.10 4.10 4.10 Half angle of view 16.70 9.32 5.11 Image height 21.64 21.64 21.64 Total lens length 147.22 176.39 210.90 BF 12.95 25.54 36.63 Also contained in this patent application is a consumer zoom, another 70-300 type of zoom, Focal length 72.10 144.31 289.00 F-number 4.60 5.68 5.88 Half angle of view 16.70 8.53 4.28 Image height 21.64 21.64 21.64 Total lens length 136.41 169.48 201.14 BF 12.95 28.75 42.22 US Patent Application 20190302404 Previous Article Canon SX70 HS review Next Article Canon Patent Application: Canon EF-M 11-22mm F4-5.6 Print 5813 Tags: CanonCanon RFPatent Application Related articles Canon Announces Price Increases on 12 Interchangeable Lens Cameras, 47 Lenses, and 4 Compact Cameras in Japan Canon RF 20-50mm F4 L IS USM PZ MTF Analysis: Optically Great or Overhyped? New Canon rumors surface about the R8 Mark II and new lenses A Modern 55mm f/1.8? Canon Patents New Batch of Consumer RF Primes Canon Announces the R100+ Please enable JavaScript to view the comments powered by Disqus.blog comments powered by Disqus