Useful, but I think you have it backwards. A 4megapixel camera is equivalent
to a 1megapixel scan.
Tom
>
>
> Tom - it's worth saying it again, but pixel counting is hijacked by
digital camera marketing brochures! For digital cameras they count the
total number of photosensitive cells in the CCD - and they are in groups of
4 with one for red, two for green and
> one for blue. (Don't ask me why - the answer is on the web - somewhere!).
For scanners we count one pixel as being able to represent any colour. So
when you think about a 4megapixel camera compare it to a 16megapixel scan...
>
> For a better explanation and loads of experimental examples, see:
http://www.users.qwest.net/~rnclark/scandetail.htm
>
> And to quote directly from this site: "Film is scanned with each pixel
have a red, green and blue value, so the 3260 x 4472 pixel scan of the 35mm
film is 14.6
> megapixels. But these are not the same as the pixels in a digital
camera. In a digital camera, each pixel is ony a red, or a green, or a blue
pixel. Digital cameras have 50 0reen, 25% blue and 25% red pixels (thus
called RGBG). So a 1 megapixel digital
> camera has 1 million red + green + blue pixels. Thus, the 35mm scan has
14.6 * 3 pixels or 43.8 megapixels in digital camera equivalent pixels. "
>
> So, do we have to buy an E-10 yet? Yes, for fun, but keep the OM and the
scanner for serious stuff!
> best regds
> jez
>
>
>
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