Pentax smc DA* 50-135mm SDM Issue

jamesm007 wrote:

"On a related topic, I know there is a method linked to on other forums to convert a lens from SDM to screw drive. I have read and reread these instructions but find some of the steps difficult to follow and understand. Has anyone who has successfully interpreted the instructions re-written them in a clearer way?"

I would strongly advice all non hard core computer programmers or engineers to not(!) try the method at Pentax Foru... its wiping out parts of your cameras firmware and re-writing it with other values. Even backing it up is a dangerous procedure.

The number one rule is to follow directions to the letter. But if your not 100% sure, positive, just don't do it.

I just read the way its done. I thought the method was to cover lens contact pins. That's one thing. To reprogram your firmware in a fashion as this is dangerous. Do you know why the directions say use notepad and not Microsoft word? If not just don't do it. You can use other text editors. But only certain ones, why? If you don't know why don't do it.

I feel for those with SDM that don't work. Go back and read my posts when I went to the store before SDM was an issue and the DA*50-135mm auto-focus would not work at the camera shop! The lens had been sitting on the shelf for a long time. I tried it, was going to get it and then everyone's DA*50-135mm lens (a lot) started to act up all around the same period of time. Its all written down.

Its time Ricoh consider putting the option in the camera firmware for activating the screw drive if the SDM fails. Its so weird that they install the screw drive together with the SDM for the DA* lenses but do not allow it to be used. Its like paying for something but can't use it. Simply does not make any sense.