Quote Originally Posted by mporter012 View Post
I'm not completely comprehending how leveling my camera necessarily levels my image?

Forget the lens for a moment, because with well designed, well corrected, normal rectilinear lenses, the lens is essentially irrelevant to parallax.

The orientation of the film to the subject controls the parallax relationships.

If the film is paralel to the actual important verticals and horizontals in your scene then those verticals and horizontals will be straight on the film too.

A hot shoe or spot level is a pretty darn good way to get roll and pitch very close, yaw requires visual correction regardless.

The problem with a level is that in the real world there is precious little, if anything, that is truly and perfectly vertical or horizontal when compared to anything else; thats just a fact of life on a "round" world.