Then explain why Nikon states that a shutter speed faster than the general rule of the focal length is recommended? They don't state this for the D7000 and yet it should have the same susceptability. In fact the Nikon tech guide for the D800 advises using a tripod and live view for best results - live view means no mirror shake. See page 6 of the technical guide. http://www.nikonusa.com/en_US/o/Y6wrkA9OU_z04IreazIXl_22UII/PDF/D800_TechnicalGuide_En.pdf Are you using heavy lenses? Perhaps the total mass of the camera and lens does some dampening?