> Fra: alex wetmore <[EMAIL PROTECTED]> > > On Tue, 21 Oct 2003, Matt Bevers wrote: > > This of course doesn't mean that taking a B&W photo on a 6MP camera > > results in a 2MP file. > > If you are using a red, blue, or green filter it effectively does. > Only it is a little worse for red and blue and better for green (there > are 1.5 million red and blue pixels and 3 million green ones). > > If you are using no filter when desaturating then you are getting > more pixels. > > It would be nice if one could buy a B&W only digital camera that > didn't have the color filter in front of the CCD. I don't believe it > is easily possible to remove just the color filter though...I think it > is manufactured in a single unit along with the CCD. > > alex >
There is an additional thing here: There is a difference in colour resolution and luminence resolution. As the filters are not able to completely block out the other colours you may argue that your desaturated image is a true 6MP image. From what I understand the takes this into account when calculating the image. DagT
