Ray,
Obviously we adopt different measures to evaluate SNR in our spectra....
What process do you use for AP images?
(I haven't used it for a while, but I believe Imagej can analyse the image for background SNR).
The sensitivity of the OSC pixels is a mixture of the Bayer filter bandwidth and transmission, the underlying QE of the chip and the eventual De-Bayering algorithm used ( i.e. Bilinear v's VNG (variable number of gradients))
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