so i have the AF-S DX 18-135 f/3.5-5.6. I asumme this means I can only set the aperature on my D80 of a range from 3.5-5.6. Correct?
A minor correction - you can't set the aperture on your D80 to anything because the camera doesn't have an aperture; the aperture is in the lens (although on most SLRs you set it via the camera).