I just got a D810 and two Nikkor lenses, 16-35 wide angle and 28-300 zoom, both for fx format. It seems that with either lens, regardless of light, and despite having the camera set to auto for both f-stop and shutter speed, the shutter sounds too slow in taking the pic and too many images are blurry. The firmware is up to date. Has anyone else experienced this? Any suggestions? I don’t want to manually set everything every time. Thanks.