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 ?

Umut
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.