I'm aware about finding the true film speed for your own set of circumstances and related aspects of the zone system, my question is really to seek a clarification(posted 9133 days ago)For example, I find in my 35mm B&W photography using Delta 400, rating it at 200ASA (or ISO!, whatever)and developed in my given developer at the 400ASA time works best for me.
When commentators say, as they do about Xtol, that a particular developer gives full film speed, does that mean that say for example in my situation, all else remaining equal, if I rate the film at 400ASA and develop it in eg Xtol, I should and get the full range tonality, detail, etc in my highlights and shadow areas?
Please enlighten me and thanks in advance.