Quote Originally Posted by qualsound View Post
Thank you Bill Burk for your answer...i have attached my (failed) test results from march for 120 rollfilm hp5+ and fp4+...could you please write your take on the results...i appreciate your knowledge and insight into the topic very much...as i am lacking there.... ;-)

Thank you and best regards,...Christoph.
Hi Christoph,

Your tests look GREAT, I don't see anything but careful attention to detail!

These look like camera tests, which includes flare. That messes with the toe, it never really gives you a low Base+Fog. So take the "effective film speed" results with caution.

But AVERAGE GRADIENT for the development time is very good information that doesn't depend very much on the toe. You can use that information to make good development times decisions.