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You can detect downsampling by looking at chroma frequencies. Bayer pattern color filters on cameras mean that color resolution is never going to be as high as
by mozumder 11y ago
You can detect downsampling by looking at chroma frequencies. Bayer pattern color filters on cameras mean that color resolution is never going to be as high as pixel resolution (assuming 1:1 mapping of pixels to sensor pixels) and if you see chroma frequencies that are higher than 2x pixel densities, then you have some downsampling going on.
- mey 11y agoNot all cameras use the Bayer pattern (there are alternatives) and Canon (and I believe Nikon) are looking at ditching it entirely http://petapixel.com/2015/10/29/canon-120mp-sensor-reportedly-isnt-bayer-and-may-have-a-multi-layer-design/ http://petapixel.com/2015/10/29/canon-120mp-sensor-reportedl...