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Message: <blockquote data-quote="aroy" data-source="post: 300685" data-attributes="member: 16090">Check if the small lever on the lense mount; which changes the aperture; is functioning. All but the very old lenses have these lever. It is meant to move the aperture blades to the value set by the aperture ring.What I think is happening in your case is that the camera thinks that the lense is fully open (say F1.4) while you have set it at f8. That is why it is reporting the wrong values. To test if that is so. Test if the lever for setting the aperture is working. Set the aperture to say f22. Now look through the lense and see if the aperture is fully open. If not then there is some thing stuck. If yes, then moving the lever will close the aperture to the value set on the lense.</blockquote>