Yesterday I started fixing my lens and when I took everything apart I found that flex cable that goes to diaphragm is damaded. I ordered new cable for just $6 and will try to fix my lens. Problem looks like in holder of this flex cable and at some co...
I heva exactly the same issue and what I found out - it's diaphragm that stuck in about f/11 position and doesn't move any way. Before taking picture it should be open (f/4.0 for this particular lens) to allow maximum light to go to the AF mechanism....
