a few days ago i noticed some black spots on my pictures at zoom f10. i tried to use "dust off" but with no success. it has gotten even worse. so i went to wolf camera and asked them how to face this issue. they gave me an authorized dealership, whom i called immediately. they wanted $190!!!! for an internal cleaning. i tried to find a repair guide online but again with no success so i just gave it a try to open the camera until i got to the sensor and tatahhhhh... it was easier than i thought. i try to make a guide how to do it. if anybody feels comfortable enough doing it by themselves please show me how to post pictures on this forum, i am new to this!!!