| Difference between a macro and regular lense: A macro lens is designed to bring flat objects into sharp focus at the film or sensor plane. Examples: A painting on a wall, or a postage stamp. When making a close-up of a stamp, the edges of the stamp are farther from the lens than the center of the stamp. A regular lens brings into focus objects that are equi-distant from the ray cross point within or behind the lens. For example, if you were inside and at the center of a large ball, the interior spherical surface of the globe could be made to come into focus on the flat film or sensor plane. A regular lens is not a good choice for making close-ups of flat objects. | 
