>>3591621Resolution needed to print an A3 size picture
To output an image properly it needs to have a certain minimum resolution. The number of pixels depend on the required output quality.
At 300 ppi (pixels per inch) the image needs to be 3508 x 4961 pixels. This is the required resolution for quality offset printing that will be viewed from a short distance (such as books, brochures, magazines, calenders,…). For photo books it is also the optimum resolution but a somewhat lower pixel count (250 dpi) is acceptable for great looking photographs.
At 150 ppi the image needs to be 1754 x 2480 pixels. This is the minimum resolution for newspapers or posters viewed from a fairly short distance.
A digital camera with decent image quality and a resolution of 12 megapixel or more can be used to print high quality A3 size pictures. Since pictures of this size are usually viewed from a somewhat larger distance an 8 megapixel camera will still offer excellent quality.
