I have a set of 2.5mm SHO filters that I would like to complement with a set of RGB filters, if possible. However, I haven't found a single manufacturer who makes 2.5mm thick RGB filters. I think the 0.5mm difference will be important as I only intend to use them with very fast optics. Does anyone know of any?
Do 2.5mm RGB filters exist?
Well Written
Same here and I am guessint you have the IDAS SHO filters 