My sister just bought a 4 MegaPixel Samsung digital camera from a private party. It has four settings for quality. Her pictures kept coming to me at 96dpi resolutions even though she set her camera on the 'next to highest' setting? So, I told her to take four pics of the same thing at each of the four quality settings. They all four came back at 96 dpi? Shouldn't each quality setting give you different dpi results? Or is her camera just older? Or different? On my Kodak 4MP camera, my best setting gives me 230 dpi. My brother has a 4MP Kodak camera. His best quality setting gives him 230 dpi, also, but a larger length/width dimension than mine. Would someone be so kind as to explain to a new digital camera user how MegaPixels work, or are defined/manufactured? What dpi does a 6MP camera give one? Thanks, kindly for all replies. Much appreciated. TallPockets.