For instance, if we have a 1 megapixel camera, the images that we get should be around 10×15 cm., From 1.3 to 1.5 megapixel image will be 13×18, and so it goes. So we have to evaluate is what kind of use we will give our camera. If 99% of the photos are to be sent by mail or posting on the Web, with a 1 megapixel camera will suffice, but if our intention is to make prints larger than those listed above, we advance in the scale of megapixels. In the table below, we have the approximate characteristics of the resolutions by the number of megapixels of the camera. Keep in mind that if you want to print to a size greater than specified, the image lose quality and “pixel” that is, when you print the image you’ll notice the points that form them, as they will be too big for that size. Camera Lens After resolution, the most important factor to consider is the lens. To get good photos, the camera should have quality optics (glass, no plastic). Like the cheaper 35mm cameras, some digital cameras bring fixed lens (no zoom type), ie, the lens always stays in the same position and at the same angle of vision. The only way here is to change the frame for a picture, it is closer or further away from the subject or reason to photography. For example: we can not always approach everything we want our subject, and when we are, most of the fixed lenses act like wide angle, which means that at a short distance will produce a significant distortion in the picture (the nose are larger, the eyes are separated, and the faces seem as if bent toward the camera).