We posted a couple of days ago that Canon was well into the development of new “big white” lenses. The first patent for a new optical formula has appeared for an EF 300mm f/2. 8L IS. Patent Publication No.
2016-173439 (Google Translated) Published 2016. 9. 29 Filing date 2015. 3. 17 Focal length 292. 46 F-number 2. 91 Angle of view 4. 23 Read more. . . . canonrumors.com
2016-10-7 16:14