Gary: I purchased the Zone VI film developer from the Calumet catalog (at the same time I picked up the 5x7 VC Zone VI enlarger). I have developed a few rolls of Tmax 100 with this developer (a two part liquid mix). The results seemed pretty good, but I don't have the experience base with it, hence the question on this forum. Apparently thin emulsion developers are designed for slower B&W films when contrast can be a problem. I am now tending toward Delta 100 & PMK developer per recommendation of various threads. I know, indiv. tests are always best. thanks, mark smith(posted 8156 days ago)