The nikon d3100 is an entry level digital slr camera aimed at photographers making their first venture into slr ownership to ensure that it is as easy to use and understand as possible the d3100 is equipped with a guide mode and a host of assist options to help you get the best from both the camera and your photography the d3100 also features a new 142 megapixel cmos digital sensor and new expeed 2 image processor to ensure that photos are of excellent quality and definition in addition t