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 5570 Tags: CanonCanon RFPatent Application Related articles Canon's Epic $22,000 RF 1200mm f/8 L IS USM Gets Put to the Ultimate (and Hilarious) Test Canon EOS R5 Discontinued Canon RF 7-14mm F2.8-3.5L Fisheye STM Canon RF 14mm F1.4L VCM Canon 5D Mark IV Discontinued: End of an Era Please enable JavaScript to view the comments powered by Disqus.blog comments powered by Disqus