For 2 years I've had a 4x5 camera and have been using roll film backs because my current enlarger can't handle bigger than 6x9. I finaly decided to make the jump... Bought some new toyo film holders, (the smelly ones.), some new Tri-x 320, and a Uniroller and drum. I'm buying a 4x5 enlarger.

I've exposed and processed 8 sheets so far and love it!!!!

Now I think it's time to do some film testing, and here's the question...

Can I mark the dark slide in say 1/2 inch spaces, expose a half inch at one film speed/ zone 1, pull the slide out another half inch, expose that half inch at the next film speed/ zone 1 and so on and so forth ect? And leave the last half inch unexposed for base + fog. What would the film speed sequense be? It would be nice to only use one sheet of film for a film test.