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Hello,
I am going to go out on a limb
here with something that I chanced upon this morning... I have been trying to
get a really nice output from the CCD LRGB's. (or they could be from photo
origins... it's not going to matter...) The results looked kind of "plastic"...
as in no good.
So the first thing I did was
print a pure RGB... it came out beautiful! You could not tell it came from a CCD
source to save your life. Where was the Luminance messing up the
shot?
It occurred to me that I
should look carefully at the histograms of both... if the histograms are a graph
of the number of pixels occupying a certain value, maybe I could learn something
from this. There it was... the RGB had most of the values nicely concentrated in
the "middle" of the graph, whereas the Luminance went from the extreme left to
the edge of the right. What I think was happening was in the LRGB combine, there
was no color values for parts of the Luminance... so it came out looking
strange. After stretching and compressing the two histograms to look almost
identical, the resulting print looked awesome! In fact, it looks like something
shot with a much larger telescope than 14.5"... there is now a color value for
every value of the Luminance... and the print looks "real" instead of
"plastic"...
I don't know if
there is any merit to this, or if this is a "duh... you didn't know that???"
sort of thing... but it sure helps the quality of the print.
Tony
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