Quote Originally Posted by marcello.brussard
X-mas holidays and time to experiment with pinhole.
My second home made camera uses roll-film and gives a negative size of (almost) 6 X 9 cm. I've done some shooting at home with kodak tri-X (the new one). The correction for reciprocity suggested by kodak requires an adjustment in development that varies with the exposure and is difficult to apply if your time varies greatly from shot to shot. I've applied the exposure correction but developed the film with my usual tri-x time/developer/temperature (i.e. ignored the development adjust). The negs I've obtained are a bit too dense in the long expositions. Does any of you can point me to set of correction values that do not requires to adjust the development time?
In order to have a negative of manageable density range when encountering reciprocity considerations the development must be compensated in some fashion. The reason is that brighter objects receive much greater relative exposure then objects that are lower in luminance. This creates greater contrast by the very nature of the exposure.

If it were me, I would tend to think in terms of the tabular grain films that others have mentioned and additionally I would move away from strict time and temperature development and toward developing by inspection. I would probably give great consideration to a pyro or catechol based developer. Highly dilute or water bath development may also be of benefit in your situation.