Originally Posted by SpecialK 
This is called "A conclusion, the jumping to".
Originally Posted by falconeye Because it means that either your camera or your SDM lens broke, just before, during or right after the update. Bad coincidence, indeed. But just coincidence as nobody reported similiar effects.
Same behavior noted in a
post on dpr on June 17. With two reports of the same behavior, I don't think it is jumping to a conclusion.
This
post might also be a case, but there isn't enough information to go by.
Thank you
Russell