Originally posted by Stanmc76 See when im putting the lens on its fully closed and just as it clicks in that opens up full and it does not move if i change the apeture
Using the e-dial on the camera set the aperture to full-open. While looking in the front of the lens, release the shutter. There should be no visible movement of the iris diaphragm (stop-down) If there is an aperture control problem, the lens aperture will not stay full-open. If you see no symptom, let the camera rest overnight and try again in the morning. First actuation of the day will often show the failure.
Steve