Northlight has broken down a patent that shows how Canon was able to increase the spread of the AF points in the EOS 5D Mark IV. A Canon patent shows how by replacing the sub mirrors with laminated diffraction gratings, the normal angle of relflection can be altered, adding or subtracting to the usual angle. In […]
from Nikon Digital SLR Camera With Lens
via Patent: How Canon Increased AF Point Spread in the EOS 5D Mark IV
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