I am looking for a rule of thumb that applies to reciprocity. I personally never noticed any reciprocity problems. I got good negs and chromes that always seemed to be properly exposed. Then again I do not know what to look for in the BW negs. I assume it is overall flatness or underexposure like it would happen on chromes.

I have done a lot of searching and cannot find a general rule of thumb for exposure and development?

Is there a film test to figure this out? I am getting efke, JandC Classic 200 and Bergger 200 for christmas so this is what I will use.

I've had a good track record so far and I would hate to start messing up now. Especially if it was something I could have avoided.

Mark