An interesting lens patent for a PowerShot camera has appeared, in the form of a Canon 3.6-255mm F2.8-7 lens with a built-in extender that can make the lens 2000mm f/10 when converted to 35mm. Patent publication number 2016-212210 (Google translated) Release date 2016.12.15 Application date 2015.5.7 Zoom ratio 66.07 Focal length 3.71 10.16 245.00 F number […]
from Nikon Digital SLR Camera
via Patent: Canon 3.6-255mm F2.8-7 w/ Built-in Extender for PowerShot
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