Archived posting to the Leica Users Group, 1996/08/02
[Author Prev] [Author Next] [Thread Prev] [Thread Next] [Author Index] [Topic Index] [Home] [Search]Marc, If the SL and MR meters do have compensation circuits, I will be a very happy person. It would also mean that the meter in my M5 would be able to operate on the silver batteries. Right now, I have a bunch of mercury cells in my refrigerator. Rather than arguing, I will perform an experiment and report the results to the group this weekend. I plan to use my spot meter as the reference. I will also do a direct substitution test. I do not think you are correct, but I have been wrong before. Best regards, At 11:05 AM 8/2/96 -0400, you wrote: >At 08:04 AM 8/2/96 -0600,Chris Forunko wrote: > >>I very much doubt that active regulators are provided inside the MR4 meter. >> >>I don't have an SL, but have an SL2. This camera does not have any >>regulation. I would strongly advise you not to listen to store clerks and >>other "experts" who say that the new batteries, like the PX625A, will work >>in your camera. > > >Chis > >Simply put, you're wrong. The MR/MR-4 meters DO have such compensated >circuitry and so does the SL -- read the literature from Metrawatt and >Leica, which is hardly the blatherings of store clerks. Virtually all >German photo gear has such circuitry, while Japanese gear does not. (I >believe the Rollei 35 also lacks such circuitry, but I'd have to ask Bob >Salomon or Harry Fleenor to be certain; in any event, Rollei recommends >re-calibration of even the late-production Classic.) > >I shot for more than a year with PX76 batteries (1.5v silver oxide) in my >MR-4 and SL. Both cameras functioned well within 1/6 stop. I am currently >using a Kiev prism on my Hassie with four PX76's in place of the original >four 625's -- and it, too, is more than accurate enough for chrome work >despite the additional 4/5 volt. > >My Canon F1, however, did NOT do well on silver-oxides: the meter was all >over the board and was about 1 1/3 stop off, though this was not consistent >enough to be relied upon. > >Marc > >msmall@roanoke.infi.net FAX: +540/343-7315 >Cha robh bas fir gun ghras fir! > > > **************************************************** C.M. Fortunko, Ph.D. Group Leader, Materials Characterization (853.05) National Institute of Standards and Technology Materials Science and Engineering Laboratory 325 Broadway Boulder, CO 80303 Voice phone:(303)497-3062 FAX:(303)497-5030 ****************************************************