----- Original Message ----- From: "Joseph Chamberlain, DDS" :The question I have now is this: : :The number or variable corresponding to the X count you refer to in your :post: can it be reset if the user chooses the auto-reset or similar setting :in the menu under the file numbering system or is this a number that is :continuously running from the moment the camera is built and can not be :reset ? I understand th count number can't be reset by a user, but I may be wrong.. :would be possible to do the following to test the number of bad pixels in :the sensor: : 1. Photograph a subject of an even color with RGB values that contrast :reasonably from the RGB values for white (usually closer or around 255). :2. Open the image in some type of text editor or perhaps the EXIF software :you mention to do a search for number values that fall outside of the :average value for the even-colored subject that was photographed. : : 3. Identify the number of pixels with values that do not coincide with the : values relative to the background. One of Kodak's 8"x10" could be used as : the neutral gray has a known value and would make it simpler to identify the : outstanding pixels. : :In case you think this would be a viable approach, how could this be done in :a simple manner ? I'm really not too clued in on how dead pixels are handled, but maybe Bob Talbot might have some suggestions - Bob? k
