The numbers that I posted are the Kodak Wratten numbers. So I can't say what you have found or how nearly they would match the wratten numbers or the spectral response of the wratten filters.

I guess that if the price were reasonable and if the filters were yellow, green, red and blue, that I might consider them. Realizing of course that they may not be the equivalent of wratten filters. Basically yellow and red will darken blue skys (the red more so then a yellow) Green will tend to slightly lighten green objects in scenes, though not as much as you would think. Films unless identified as orthochromatic are panchromatic and as such are more responsive to reds then to greens.

I have used blue maybe once or twice in over twenty years. So it is not a big use item. Good luck.

Donald Miller