Thanks for the expert answers on my TMax 100 question. Looks like there are some real photochmical experts on this list. I will try the D76 1:1 approach. If I like the TMax characteristics I might also try the TMax developer, but some chemicals hard to get here and developer shipping is restricted.
Riachrd, is a "diffusion enlarger" the same thing as a "cold light enlarger" ? I have an Aristo cold light head for my Omega B22XL but never actually tried it. I certainly have lots of B&W negs that appear to have too much contrast for the condenser head.
Jan On Oct 20, 2008, at 2:03 AM, FreeLists Mailing List Manager wrote:
.... From: "Richard Knoppow" <dickburk@xxxxxxxxxxxxx> ... Both will give you satisfactory results but D-76 is closer to optimum and will deliver somewhat greater speed and finer grain. I use D-76 1:1 as a one shot for 100T-Max. The optimum developer is Kodak Xtol which gives the best combination of fine grain, maximum speed, and good sharpness. For maximum speed use Phenidone type developers such as Xtol, T-Max or T-Max RS, Microphen, DDX. These will give you about 3/4 stop more speed than D-76. Xtol will be silghtly finer grain, the others slightly coarser grain than D-76. The Phenidone types also generally yeild greater Dmax (its pretty high anyway) and somewhat straighter characteristics. For finest grain use either Kodak Microdol-X or Ilford Perceptol (they are nearly identical). These, used full strength, will give you grain nearly as fine as the late, lamented, Kodak Technical Pan but with considerably greater speed and much easier control of contrast. Kodak has very complete developing recommendations for T-Max film on its web site. Note that Kodak developing charts are intended to yield contrast suitable for contact printing and diffusion enlarging. For the right contrast to use Grade-2 paper on condenser enlargers somewhat lower contrast is required. Kodak recommends reducing developing time about 20% and increasing exposure about 3/4 stop for this contrast index value.... -- Richard Knoppow