Auto Image Rotation
Explanation: If you leave this option with its default „on“ the D7000 will save information with every picture if the camera has been held upright or horizontally.
When watching pictures they can be shown in the right orientation if the displaying software reads this information. A good picture viewer has a choice to consider or ignore it.
Tips: I leave the standard value „on“ because it is convenient that pictures appear in right orientation automatically.
But the function also has its caveats: If you pass on images it can happen that the receiver does not see pictures in the right orientation if his software interprets the flag differently.
And if you have a large collection of images where this indicator has been used inconsistently you will again and again need to rotate pictures or change the settings for display.