Hi Bob .... Thanks for posting all that info. I really didn't need it, but someone else certainly may. Actually, my question was more of academic interest than anything practical, as I rarely use the meter on the MX - most of the time there aren't even any batteries in the camera.
Shel > [Original Message] > From: Bob Blakely <[EMAIL PROTECTED]> > To: <[email protected]> > Date: 3/11/2005 12:27:33 PM > Subject: Re: LX Screens in an MX > > All LX screens are brighter than MX screens. You can have the camera's meter > professionally adjusted for the new screen(s), or you can simply lie to the > MX about the ISO. The brighter screens will tell the MX that there is more > light, so the meter will read high. You will need to lower the ISO. One way > to get a reasonable read on how much to adjust the ISO is to meter a > "standard" with an incidence meter. > > 1. Set the camera on a tripod, point it at a blank, white wall at > night. > 2. Turn on one light set beside the camera such that it illuminates > the wall evenly. > 3. Measure the wall using a good incident light meter set at ISO 100. > 4. Adjust the distance from the light to the wall so that the meter > reads a standard f/stop and standard shutter speed. > 5. Set the camera' shutter and lens aperture to the meter's reading. > 6. Adjust the ISO so that the needle centers. > 7. This is the new proper ISO setting for ISO 100 film (nominally). > 8. Note the number of fractional stops delta from ISO 100. This is > now the number of stops compensation that one must make for any ISO film. > For example: > > If the ISO setting for ISO 100 film is ISO 50, this is one stop. e.g.: > > For ISO 50 film, use ISO 25 on the camera. > For ISO 100 film, use ISO 50 on the camera. (as measured) > For ISO 200 film, use ISO 100 on the camera. > For ISO 400 film, use ISO 200 on the camera. > For ISO 800 film, use ISO 400 on the camera. > For ISO 1600 film, use ISO 800 on the camera. > > FYI, You can adjust the exposure compensation instead, as it's the same > thing. You can then just use the camera set at this exposure comp. > > The above should be good enough for all practical purposes. > > Somebody check me on this, it's been a long week. > > Regards, > Bob... > ------------------------------------------------ > "A picture is worth a thousand words, > but it uses up three thousand times the memory." > > From: "Shel Belinkoff" <[EMAIL PROTECTED]> > > > > Just wondering how difficult it is to replace the focusing screen in an > > MX. > > Is it as easy as changing screens in the LX. And about the metering when > > that's done, will the MX meter read over or under "normal?" What about > > with the newer, brighter LX screens? >
