----- Original Message ----- From: "J. C. O'Connell"
Subject: RE: B&W developers and Tri-x ??
If you recall this discussion started because Kodak recently claimed
that
their newer technology film TMAX 400, offered same image quality at 3
times the speed
as their old one PLUS-X. SAME QUALITY, but faster speed. That is not a
hypothetical,
that is the real world situation that has occurred over and over again
for decades
as film/processing technology improved both color and BW.
The discussion started because you tossed this particular straw man into the ring, and now your ego won't let you back down.
The problem with this is that you are basing your arguement on something that is just not true.
T-Max does NOT offer the same image quality as Plus-X.
It's charachteristic curve is different, the grain structure is different and its colour respnse is different.
About the only thing you can say is the same (perhaps) is that the granularity RMS of T-Max is similar.
That is one parameter out of 4 that is similar, but not identical.
In my world, this isn't even a close match, much less "the same image quality".
William Robb
