My point was that the histogram is a very useful tool to check the exposure, but could be even better in some circumstances if it had the option of being a log histogram. Using the image review with the kind of images I suggested is pretty much useless. There's often not large enough chunks of bright subject to accurately determine the exposure. Also, the whole night-vision problem is a *huge* deal.... maintaining night vision is pretty much impossible if one is critially looking an a bright backlit LCD.
-Cory On Wed, 21 Mar 2007, J. C. O'Connell wrote: > In those type cases the histogram would be ignored of course, > What I am talking about is good exposures AS SEEN USING > IMAGE REVIEW after you take the test photos. Not the > histrograms exclusively. In any case, any histogram always has > to be evaluated based on the particular photo itself. There is no > one universal "correct" histogram for all photos. In summmary, > I still say that at those really low light levels, the best/most > accurate > way to get the correct or desired exposures is to actually > evaluate them by taking test shots and using the image review, > not by using an external meter. > jco > > -----Original Message----- > From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of > Cory Papenfuss > Sent: Wednesday, March 21, 2007 8:33 AM > To: Pentax-Discuss Mail List > Subject: RE: Metering Takumar lenses > > > On Tue, 20 Mar 2007, J. C. O'Connell wrote: > >> If you are out of the meter's range, you can still >> use the camera, just shoot manually at apertures >> you want to use and adjust the shutter speed until >> you get a good histogram/review image on the LCD. >> At really low light levels its going to be the only way >> to ensure accurate exposures. >> jco >> > ... except when taking mostly dark images with a small fraction > of > very white ones (think moon or stars). If the histogram would have the > option of being logarithmic, it would be a useful tool for this type of > photo as well. > > -Cory > > -- > > ************************************************************************ > * > * Cory Papenfuss, Ph.D., PPSEL-IA > * > * Electrical Engineering > * > * Virginia Polytechnic Institute and State University > * > ************************************************************************ > * > > > -- ************************************************************************* * Cory Papenfuss, Ph.D., PPSEL-IA * * Electrical Engineering * * Virginia Polytechnic Institute and State University * ************************************************************************* -- PDML Pentax-Discuss Mail List [email protected] http://pdml.net/mailman/listinfo/pdml_pdml.net
