The more pixels, the worse the image. Sweet Spot: 6MP

So apparently after 6 megapixels, the more pixels your digital camera has, the worse the image gets. Camera companies know that people cream over the number of megapixels their camera possesses, and so they cram as many MPs they can onto the image sensor. With compact digital cameras the image sensor can only so big because of the cameras overall size, so the MPs get smaller as they cram more onto the sensor. This results in grainy images because there is then more ‘image noise’.

Anyway, don’t even bother reading my crappy explanation, just check out the real thing here.