Hi, Kevin: Have you tried using an orthochromatic effect with regular panchromatic film? Use a Wratten #44A (minus red) filter. It allows you to create an orthochromatic image without changing your development time. (View Camera Magazine-March/April 1991, p33. by Steve Simmons). (The Negative 1991 - A.Adams p. 104, p. 108, p.112). Best wishes, Tito.