Hi Alan, I never thought of that and it sounds like a creative manipulation of film. Film would actually block the image like shooting through a microscopic screen wouldn't it? Is that the way filters work? I know they prevent the passage of light but just exactly how do they do it? Is it a wavelength interference voodoo or is it just tiny bits of opaque material in the glass? Greg > -----Original Message----- > From: Alan Zinn [mailto:azinn@netbox.com] > > Greg, > I may have some tinted plex you can have. Is this > transparency film? Could > you somehow expose a sheet to get a neutral tinted material? I know, > off-the-wall...!