I understand that to recreate the spectral response of a camera's sensor, you need to use a monochromator/spectrometer to get calibrated images. But I'm not sure where you go from there. When looking at graphs, generally I just see spectral response (y) and wavelength (x). There aren't any units for spectral response so I find this quite confusing. Am I just sampling the pixel values of each image taken? Is there some sort of conversion/function/software that let's me calculate this for each of the camera's channels?
Okay, I've seen some of your responses but I'm still not sure I understand. Perhaps there is a more comprehensive resource I could be pointed to? My ultimate goal is to take the spectral response of a camera and use it to generate a model of animal vision by pairing with the results of photoreceptor responses in the retina.