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 […]
from Nikon Digital SLR Camera With Lens
via Patent: A New Canon EF 300mm f/2.8L IS
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