You are not supposed to use the aperture ring, that is used for older film DSLRs, it is there to keep the lens compatible with the older cameras. Just keep it at f22, and use the body controls to set the aperture.
So, basically, what you are doing wrong is trying to use the aperture ring .
Last edited by coldrain; 10-06-2006 at 12:45 PM.
Canon EOS 350D, Tamron SP AF 90mm F/2.8 macro, Sigma 18-50mm F2.8 DC EX, Canon EF 70-200mm f/4 L USM, Tokina AT-X124 Pro 12-24mm F4, Soligor 1.7x C/D4 DG Teleconvertor, Manfrotto 724B tripod, Canon Powershot S30