Kostas, Yes there is. I had a flash exposure meter with a fitting so it exposed only through a small hole under the enlarger. Having sold the unit I have to comment from memory. You can calibrate the unit (using the old fashioned test strips), but after that put the meter in a light area and you would know the exposure to get full black. There was also an option, using some filter settings (I think yellow was one mentioned) and you could compare the light in the dark and bright areas, calculate the ratio, then looking up a scale, determine the contrast grade to use. Never actually played with it for pictures though. Usually look at neg and guess (from experience) the grade setting to use. And still do test strips. I believe there are a number of commercial instruments for determining exposure under the enlarger. Think I have seen the type of filter wheel you mention, but that requires a test sheet. But only one exposure is needed, as the shades of gray effectively do the test strip exposures. It giveds the results of different exposure times and just select best segment and set timer as for that. Hope this helps. Jim Thyer Australia. ----- Original Message ----- From: "kostaspapakotas" <kostaspapakotas@xxxxxxxxxxx> To: "List for Photo/Imaging Educators - Professionals - Students" <photoforum@xxxxxxxxxxxxxxxxxxxxxx> Sent: Thursday, March 10, 2005 9:55 PM Subject: Another B&W printing question > > this one is based on an earlier reply to a Q of mine regarding B&W > printing (see attached message) > So the new Q is something like this: > > Is there a device that saves you from test printing? like somekind > of density filters placed over your paper that let you estimated the > density of the covered area and the needed change in the printing > time. > i just wonder... > thansk beforehand, kostas > > > --- In photoforum@xxxxxxxxxxxxxxx, "R. S. Davidson" <rsdwla@xxxx> > wrote: > > Reference your #1 ... 18% Gray Card > > > > Not worth the time and effort to try to make your own. Kodak > > sells them at a reasonable cost. > > http://www.kodak.com/US/en/motion/products/tools/card.shtml > > > > While you are at it ... get a Kodak Q-13 Gray Scale and > > Color Separation Guide ... they only cost something like > > $10, and can save you a whole bunch of time and effort. > > > > >
