Archived posting to the Leica Users Group, 2000/11/12
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Mark, The Rabid, Rabiner: I think we're talking about the same thing, basically. You read a test strip, and I don't trust my eyes so I read off a meter! Once I calibrated, I can tell you how many seconds of exposure with each color to expose to get any specific tone. Just a matter of methodology. Some roll, I invert and twist! If a shadow is too dark with a 5 seconds exposure, and I know that the high contrast emulsion will give me a .97 change in the print or paper density for every stop- or .3 log change in exposure, then I can control the shadow by reducing the exposure proportionately. So if I wanted to make the shadow area say light by a log value of .1 or so, then I reduce the exposure to say- 4.5 seconds. You do it with test strips, I do it with numbers- and a probe! Same result. It is just I am more comfortable with a probe (and this is a small one hooked to a fiberoptic cable!) :o) Dan ( Poke me! Squeeze me! Take me home!) Post