Know Your Lenses: DSLR lenses- get to know all about telephoto, prime lenses, wide angle and kit lenses! Which to use for faces, which to use for places, and everything in between. (great info for beginner photographers)
Tips for Using the Diopter Adjustment on Your DSLR. (By Derrick Story) [.] The diopter wheel is usually located near the optical viewfinder eyepiece. You can see it in this image just above the optic and to the right.