Patent: Canon RF 70-200mm f/2.8L IS USM

Last updated: January 3, 2019 12:22 pm

Published: January 3, 2019

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We expect to see an RF 70-200mm f/2.8L IS USM announced some time in 2019 as part of the “holy trinity” of f/2.8 zoom lenses for Canon's EOS R system.

Here's the first patent for such an optical formula uncovered by Canon News.

US Patent Application 20190004296

Focal length: 72.00 135.00 194.99
F-number: 2.92 2.92 2.92
Half angle of view (deg.): 16.73 9.10 6.33
Image height: 21.64 21.64 21.64
Length of the zoom lens : 172.73 227.50 242.86
BF: 14.38 26.45 39.44

TAGGED:EOS R patent RF 70-200 f/2.8L IS

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Craig is the founder and editorial director for Canon Rumors. He has been writing about all things Canon for more than 17 years. When he's not writing, you can find him shooting professional basketball and travelling the world looking for the next wildlife adventure. The Canon EOS R1 is his camera of choice.