I have read a post from Harris where he talked about some fogging problems in the unexposed areas of coated paper, and I had a couple of questions related to the answers which were given…
I am using a Metal Halide Lamp of 4000 W, and normally print with Pd and Pt in a 80-20% ratio. As I am using Pt, I fear I cannot use Na2 as contrast control measure in order to avoid fogging. However, some other printers told me than when using Pt too in the emulsion, the risks of fogging are quite limited… I would like to avoid using the A+B method for contrast control, since the graininess I obtain with it is not something I like…
What I would like to know is whether when printing with Pd and Pt and no restrainers at all, it is normal to obtain fogging when using the current PiezoDN curves? (assuming no stray light is present in the darkroom when working). I ask this because I read the answer of Walker, talking about the release of a new set of curves “for metal halide burners”, which made me think users like me should be using a higher density negs to really block out the brightest highlights?
Another question would be: When these new curves will be available, will their increased density only affect the last patch of the calibration target? In other words, will we have to re-linearize all papers again or they will only make sure the last patch is for sure totally white?
Thanks for the clarification, and for any clue about when these new curves might be available!