To ensure the best possible print results we strongly advise and recommend that customers use photos no lower than 300dpi. In short the higher the DPI (dots per inch), the sharper the image will be. You get more detail and greater resolution from an image with higher DPI. A lower DPI will produce an image with fewer dots in printing, meaning lower quality, possibly blurring or pixelation. By Scanner | | By Camera | Scan at 300dpi (res) Scan at the same size Set to high quality Jpeg | | Take the photo square on No flash with good light & focus At the maximum file size | | |  | |