Look at what this Pentaxian, who has both the K20D and K-7 bodies, reports about the SDM *body* problem that he faces!http://www.pentaxforums.com/forums/pentax-dslr-discussion/101639-very-strange-supersonic-drive-motor-problem-anyone-experience.htmlReally strange! It seems that the SDM is actually very buggy and totally unreliable, not only for the lenses that are so easy to die, but also it will
