Graflex.org

primus96 · Posted: Sun Dec 14, 2003 2:19 pm Post subject:

Are there any sources of film which is only sensitive to blue light?
I like to experiment and I wanted to illustrate the way black & white film has developed from blue-ortho 7 then panchromatic film.

glennfromwy · Joined: 29 Nov 2001 Posts: 903 Location: S.W. Wyoming

Have you checked out Ilford Ortho Plus? It's supposed to be a continuous tone ortho film.

_________________
Glenn

"Wyoming - Where everybody is somebody else's weirdo"

Nick · Joined: 16 Oct 2002 Posts: 494

Kodak commerical internegative film? But it's been killed by Kodak. You might find some in a store fridge. Maybe somebody makes a graphic film?

http://www.kodak.com/global/en/professional/support/techPubs/f16/f16.jhtml

I don't think it was cheap.

While not perfect it might be easier to just use a deep blue filter. A #47 filter should pass nothing but blue light.

Henry · Posted: Mon Dec 15, 2003 4:03 am Post subject:

Isn't this why the old-time guys used to sandwich-print their landscape work with a cloudy-sky + primary-subject neg? Otherwise, blue-sensitive film would show a stark white sky in a positive print.