Continue reading...Another patent for the already announced Canon RF 70-200mm f/2.8L IS USM has been spotted. This should further confirm that the lens is telescopic and isn’t an internal zoom. This is a slightly different than the RF 70-200mm f/2.8L IS patent posted back in January.
Japan Patent Application 2019-045555
Focal length: 72.00mm~ 134.99mm ~ 194.94mm
F number: 2.91 ~ 2.91 ~ 2.98
Angle of view: 16.73° ~ 9.11° ~ 6.33°
Image height: 21.64mm
Lens length: 172.73mm ~ 219.96mm ~ 231.71mm
Back focus: 14.37mm ~ 18.40mm ~ 28.12mm
When looking at the length of a lens in a patent, you need to remove the flange distance from the equation. In the case of the RF mount, that is 20mm. This makes the RF 70-200mm...