Originally Posted by
Thalmees
That's really good.
Photography as art, does not need very deep and specific knowledge.
Science imply clever expectations based on basic but robust knowledge.
Please read further.
So, what do you expect if you used two(2) light color filters stacked together?
One is light Red, the other is light Blue.
Do you think the Red part could darken greens like foliage?
Then, the blue will lighten the sky?
Something like the effect of pre-panchromatic films, may be 1800's century's plates.
That's the Magenta as I think. It has Blue, built in!
Please notice also that Pan chromatic films do not see like our eyes, and need a grade of Yellow(Y8-Y12) to see like human eyes. You are taking the film further away from our seeing nature if you use Magenta filter.
Photographic contrast filters, from light Yellow(Y5 or Y8) to true Red(R25) plus green filters, has a cut point(actually it's a zone, not point) at which, most of the shorter wave lengths lights, are blocked almost completely. Its effect on film is expected very well.
I could not imagine a similar curve for Magenta filter. Artistically, I do not feel well with the idea.
But, for testing, studying, special situations or just for fun, every and any assumption can be considered worth of trying.
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