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In high school optics we frequently do problems involving a thin film of
Magnesium Flouride on a lens to enhance the tranmission in the middle of
the visible spectrum because of a lack of sensitivity by the film (I
hope I have this right).
What about digital cameras? Do their lenses need any form of such
correction or are the photo arrays more uniformly sensitive across the
Thanks for any comments on this, I am an optical novice.