On Friday, May 30, 2003, at 04:42 PM, Shangara Singh wrote:
May sound pedantic but until you get to the megaDollar cameras, they all
interpolate (not 100% sure about the CMOS based cameras but I think it
applies to them too).
In fact pretty much all one shot cameras (with the exception of the Foveon chipped Sigma) interpolate. This "adjacent pixel colour interpolation" is necessary to create full tone colour at each pixel position, the actual data being recorded being in only one colour at each pixel position.
This is of course not the same as "image size interpolation" where new pixel positions are created or discarded depending on whether the image is being resized up or down.
It is important to understand the two different applications of the same word.
Multi shot cameras do not of course use adjacent pixel colour interpolation in multi shot mode, as by moving the chip they record full colour at each of the pixel positions, and indeed in some cases (more than 4 shot) create new pixel positions between the actual pixel positions on the chip.
That, anyway, is how I understand it.
----------------------- Best, Francis Newman Webshot Ltd, UK
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