Quote Originally Posted by Mustafa Umut Sarac View Post
Keith ,

I mean slit openings on black ground. I need 6 or more different sizes autochrome grain size slits for to manufacture autochrome filter for customable to entire dyes spectrums with diffracting light.

Is it doable ?

Couldn't you do this yourself with microfilm. Draw up the pattern of black lines in large scale on white poster board and photograph, or have someone photograph it for you on a copy stand with a macro lens on high contrast microfilm like Copex or Tech Pan.