Hi all. I'm working on developing a workflow for using paper negatives in-camera and one of the things I keep running into are statements regarding the ISO rating of paper vs the ISO rating of film. Many people say that the best thing to do is simply test for your in-camera paper negative ISO. The problem is that I've seen this recommendation everywhere but no explicit instructions on how exactly to do it. Can someone PLEASE provide me with clear instructions (step-by-step) on how to test the in-camera ISO of paper? I understand there is probably more then one method so please share the method you've used. I am looking for a method that will give me the most exact ISO possible. I plan on using my Pentax 1 degree spot meter so plugging in the correct ISO is important for use with the zone system. Please limit responses to information directly relevant to the question at hand with instructions on testing. Just trying to stay on track. Thanks!