problem in autofocusing & shooting nikon d7100 V.strange

ajbarznji

hi...
before couple of days every thing was ok i toked some photos normally at night
when i waked up in the morning i found something very strange :
the camera can not auto-focusing correctly ... cannot recognize the auto-focus
i tried every thing you can imagine like changing the lens or reset even re-update the firmware
not focus nor shooting in auto-focus mode when use viewfinder but it normally work when uses the LCD
in this video you will see whats going on with me ...

note: i don't know why the speed shutter & aperture blinking in auto mode !?

https://youtube.com/watch?v=esWhdFQALYo

Ironheart

Did you check the position of AF lever on the front of the camera?

ajbarznji

@ironheart i did every thing like those n same

ajbarznji

Did you check the position of AF lever on the front of the camera?

@ironheart i did every thing like those n same

Ironheart

I would try cleaning the mount contacts on both the lens and the camera. I bit of alcohol on a swab or lint free cloth. The lens has pins that should easily slide Back and forth in their socket. Do you have more than one lens to try?

ajbarznji

I would try cleaning the mount contacts on both the lens and the camera. I bit of alcohol on a swab or lint free cloth. The lens has pins that should easily slide Back and forth in their socket. Do you have more than one lens to try?

yes i tried 3 lenses the very strange thing is why it take the photo in LCD but in view finder cannot recognize the items to focus on it

tcole1983

Sounds like it needs to be sent in and have Nikon look at it. I watched the youtube video, but I still wasn't exactly sure of your problem. Did you try the two button reset back to factory defaults?
https://support.nikonusa.com/app/answers/detail/a_id/17395/~/how-to-reset-a-d-slr-to-factory-default-settings

Leaving the battery out won't reset anything. It just depowers the camera. When turned back on with a battery all the same settings are in place.