Typically I develop my 4x5 negatives in a jobo 3010 drum, rolling on a Beser print roller base. I have not done much experimentation in developing times to affect contrast, but am realizing that many scenes I photograph would benefit. Typically I use 50ml of solution per negative (500ml in my 10 negative drum)- my understanding is that at least 50ml of solution per neg will not become exhausted. My question: If I only have, say 5 negatives, or even 1 or 2, in the drum, and use the same volume of chemistry (500ml), will my contrast curves really change appreciably? I could understand that they would if I was using less than 50ml per negative, but will using more than that amount per negative reallly change things? If so, why? The reason I ask is sometimes I might only want to do one or two negatives at an non normal development time. If I only used the 50ml of solution for two negatives, it seems to me that, in the large drum, the negatives would not be in contact w/ the small amount of solution for as long a time, as the drum rolls. This would, in my mind, have an impact on the contrast curve. Thoughts?