Yup it's a sad fact that as you get older the bench holds little charm for most scientists. The fun part is devising the experiments and asking the right questions, then you make your underlings do the dirty work. This way no challenge is too great and no experiment is too complex...or pointless. If I could find someone willing to do the tests (and pay for them) I could keep them busy for years.(posted 9326 days ago)On a serious note I was wondering if using the method of printing the sprocket holes until they just disappear and then picking the exposure that looks the best was a good way to find your camera's correct ASA setting for a given film etc.