Originally Posted by paul ron
Stop wasting film, use the backing paper of a developed roll as your test roll.
True. It doesn't have to be "film" per se. That's an expensive route to go. And at least around my place there must be a hundred rolls of backing paper laying around.
If you need some to experiment with, drop me a PM and I'll send you a few (dozen) rolls. My wife will love you.
Industrial Informatics, Inc.
The camera catches light. The photographer catches life.