Hi David,Welcome to Nikonians!What color is the line and dot?If they are black, it could be as simple as a spot of dust and a thin thread on the sensor.Good Luck and Enjoy your Nikons!
Copyright © Nikonians 2000, 2013
All Rights Reserved
Nikonians®, NikoScope® and NikoniansAcademy™ are trademarks owned by Nikonians.org.
Nikon®, Nikonos® and Nikkor® are registered trademarks of Nikon Corporation.