The Ricoh A12 28mm is the fourth lens-sensor module for the revolutionary Ricoh GXR camera system, which combines the lens and sensor into a single interchangeable unit. The new A12 28mm unit combines a 28mm f/2.5 lens with a 6-group, 9-element configuration and a 12.3 megapixel APS-C CMOS image sensor. It simply slides into and out of the front of the GXR body, with virtually all of the features of the camera body available for any of the four units that are now available. The Ricoh GXR A12 28mm module also ofers an ISO range of 200-3200, GR Engine III processor, manual focus ring, and 1280×720 pixel HD movies.