Hi oftheherd, probably slightly tounge in cheek but thats kinda how i do feel about them though
I agree about the use of red filters- i do use them, and the kodak example i find interesting (if not typical advertising hype), i agree with the red part but i find the green filter does nothing much a yellow wont do. at least i remember testing the green and yellow coinsidently with a red rose against the foliage as well and it didnt seem to make a difference
its interesting because i was recently reading some old photo magazines that had articles about the green filters, and a number of advertisments for their use. old style ortho film (can still get it now of course) made the red in peoples faces appear blotchy and were often retouched after to overcome it, then the early Pan films were said to have dip in sensetivity in the green and over sensitive to reds (and blues)causing faces to look pale hence the need for the green filters to overcome it, so they say. a later article in a different magazine measured them all and found that green didnt do anything that yellow didnt do already all things being equal, nor did it actually fix the problem with pale faces with the early Pan film, what did cure it was the introduction of balanced pan film and it my feeling that the green filters got the credit and the idea that green filters were usefull has just stuck all these years later. its an old debate but i havnt really noticed any beifit to using a green or blue filter--well the blue filter from what i remember did make the pictures...hmm cant think of the word but not better
I am happy to learn different ,but i just dont see any real need for them at all now with modern balanced films that aren't over sensitive to reds and blues but out of curiosity i will give it a test again on portraiture. the argument about how the filter will lighten its own colour on the surface is a compelling one (because it seems logical) but in practice it doesnt seem to work for green and blue filters within the usefullness of taking pics i find