On 27/11/02 3:33, "Jay Busse" <[EMAIL PROTECTED]> wrote: >> Another big advantage (for me) of CMOS is the lack of a dust problem on >> the sensor which can become a real pain. > > I wasn't aware of this advantage to CMOS. How/why does this work?
In simple terms. Because that's the way I understand it :-) The CCD has a charge on it. When you remove a lens on the camera, the CCD sucks in all the dust it can from the atmosphere, attracted by the charge. This leads to dust spots on the sensor and the need to clean the sensor. CMOS does not have this charge, when you remove a lens, a dust speck may fall onto the sensor, but will not be sucked in forcibly. Hence dust specks appear to be a very rare occurrence on a CMOS camera. I have never once had to clean the sensor of a D30/D60 in two years. I'm sure there is a more technical explanation out there, but this is a good summary. Check out all the review sites etc. (as I did for over a year) and you will see that most people with a CCD camera, have to clean the sensor at some time or other. CMOS people do not. (Yes this is a generalisation, I'm sure somebody has cleaned a CMOS sensor at some time!) Paul -- Paul Tansley Fashion & Beauty Photography London +44 (0) 7973 669584 http://www.paultansley.com =============================================================== GO TO http://www.prodig.org for ~ GUIDELINES ~ un/SUBSCRIBING ~ ITEMS for SALE
