Quote Originally Posted by Bill Burk View Post
The "problem" with that approach is, to know what exposure Zone IX would be, you kind of have to have an idea what speed the film is...

And the 0.1 density test results do not change dramatically with development time.
Thanks, Bill. But this is one of those things I need to start somewhere on guessing a development time. 2 mins? 4?, 10? I need to knock that problem down to at least a vague idea.