301D Image OverlayOnly NEF (RAW) photographs with the same image area and bit depthcan be combined.The overlay has the same photo info (including date of recording,metering, shutter speed, aperture, shooting mode, exposurecompensation, focal length, and image orientation), and values forwhite balance and Picture Control as the photograph selected forImage 1. The current image comment is appended to the overlaywhen it is saved; copyright information, however, is not copied.Overlays saved in NEF (RAW) format use the compression selected forType in the NEF (RAW) recording menu and have the same bit depthas the original images; JPEG overlays are saved using size-prioritycompression.
