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What is meant by interpolation?

One of the first things that often comes to mind when comparing trailcameras is the number of megapixels, the idea being 'the more megapixels, the better the image quality'. Manufacturers of trailcameras cleverly take advantage of this by interpolating the number of megapixels and then advertising these interpolated megapixel values. In the case of trailcameras and megapixels, this means that the software in the camera attempts to make, say, four pixels out of one actually measured pixel. The colour of these four new pixels is determined on the basis of the colour of the surrounding pixels. The true sensor resolution is rarely reported, while in fact it says much more about the image quality of the camera. Click here to learn more about interpolation.

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