Pull proccessing tri-x and t-max

[justin_fullmer]

Ive read that both tri-x and t-max give better results if you shoot them at ISO 200 or 320 instead of thier rated 400, then develope them for the normal 400 time. Is this true? Couldn't you also just shoot them at thier rated speed and just increase development to get the same results? What changes could I expect to see in my negatives by going this route?

Thanks!!!

[d.a.galgozy2]

Try to find a copy of "The Negative" by Ansel Adams, or, "Zone VI"

by Fred Picker. This is where this all begins. Even if you never use

the zone system, it's a good part of a balanced photo education.

[tim_brown5]

The ISO speed is determined under controlled conditions and is

usefull to the individual photographer as a starting point. The

carefull shutterbug does tests to determine a personal exposure index

(EI) that takes into account individual equipment and technique. The

published development times are also a starting point. The object

with silver image B&W film is to find a minimum amount of exposure

that gives adequate shadow detail and development that gives desired

contrast. Many find EI to be lower than the ISO rating, some end up

with EI higher. Increased development will not restore lost shadow

detail due to underexposure. Overexposure increases grain and reduces

sharpness.

[kenneth_williams1]

Try rating Tri-x at 50 and develop in D-76 1:1 for seven minutes.

You are pulling the film three stops. The negatives will be dark

because you are overexposeing the film by three stops, but are

undeveloping to compensate for it. This combination is good for high

contrast subjects.