Pentax *istD 6.1MP Digital SLR Camera (Body Only) Smallest and lightest digital SLR as of April, 2003 6.1 effective megapixels Compatible with K, KA, KAF and KAF2 mount lenses and 645 / 67 lenses with an adapter Compatible with CompactFlash Type I/II cards and MicroDrives Powered by 4 AA batteries