I would like to start off this question by stating that I understand what the "circle of confusion" is and how it is calculated. What I do wish to ask, is for a subjective opinion on your experience and viewpoint on the topic. Should you wish to offer a simple explanation of "cof" for newcomers, I am sure that might also be acceptable and appreciated by some.
I am wondering what you would consider a very acceptable "circle of confusion" assuming that you are shooting 4x5 negatives and that you are printing three different print sizes? What level of sharpness do you set out as your goal or objective in your negatives? If we could relate the answers to either or all of the sizes 8x10, 11x14 and 16x20 prints that would be most appreciated.
I am less concerned about getting into the techicalities of the subject than I am about having a reasonable grasp of how it actually applies to the real world.
Kind Regards,
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