Sorry T_om -- didn't mean to ruffle your feathers, even slightly! And I certainly take your point about testing.
But I think we do differ slightly about how much testing is needed. I believe that with two bracketed rolls, one in each dev, you can see if the magic is there. Once you've found the combo(s) you like, stick with it/them and, as you suggest, start exploring the limits of what they can do.
Mike -- I'd certainly agree that films of a similar speed tend to have similar tonality as compared with faster or slower speeds but equally I'd say that I see small tonal differences between Tri-X and HP5 but significantly bigger tonal differences between either of those and Delta 400 and a bigger difference again when it comes to TMY.
I'd agree about exposure and tonality -- indeed, this is the basis of ISO film speeds -- but I'd also say that it's a lot harder to get bad tonality with overexposure than with underexposure: an extra 1/3 or 2/3 stop can make all the difference, but after that, another stop won't affect tonality all that much, though it will mean reduced sharpness and coarser grain.
The more I think about it, and the more I learn, the more convinced I am that there are very real differences in how we see, and this is self-reinforcing.
To me, for example, bokeh is almost completely irrelevant: it has to be REALLY bad before I notice. Grain I can live with, but tonality is paramount. But I think there must be people for whom bad bokeh is as unpleasant as bad tonality is for me. Maybe this deserves a thread of its own...
Cheers,
Roger (
www.rogerandfrances.com)