My d500 was working fine, I had taken a few shots and then drove out in the country for some fall color shots. Bummer, the shutter would open apparently but wouldn't close for some period of time. Tried several setups, no change. Did a reset, no change. Set everything in manual and got some shots. Got home and mailed it to Nikon repair in Los Angles. Two days later got the bill by email, paid it and 5 days later the camera was home! Boy was I happy with that service since I had read some comments about Nikon's poor service. Then I read the report. Claimed the camera setup was with a 2 second delay in the shutter release. Ain't no way!!! I shoot mostly birds in flight and a few landscapes but I didn't even know such a setting was available. O.K. that's my fault, I haven't memorized all the menus after two years and have NEVER used shutter delay. But after all the cameras I've had, and the d500 for two years, I would definitely know if I had setup a shutter delay. So, I got fast service with a hopefully thorough checkout and the camera works fine for $261, but I really wonder what was wrong with the shutter. BTW I looked at the menu and they had "left" in with a 2 second shutter delay! I turned it off. Oh well, now I know where it is. Attached are some flight shots and a landscape just for fun