jeep_daddy wrote:
If you are getting error messages then yes, you need to send it in for repair. Soft images, well, wait and see what it does after you get it back from repair but if they still aren't sharp, I'd start by buying a good Nikkor lens. You may have a bad copy of the Tamron lens.
If you have another lens, try it before sending the camera in for repair. It just might be the Tamron lens that is causing the error message. After all, it's a 3rd party lens not made by Nikon.