HOW TO: Convert SDM to ScrewDrive - Pentax

This video describes the process I used to convert my 50-135mm SDM lens to screw drive. Proceed at your own risk. Too Much for you? Go here: http://www.pentaxforums.com/forums/24... Wanna give it a try? Keep Going. NOTE: I am not responsible for any damage that my occur to your equipment. Continue at your own risk. Stuff you need: PKTether && Pentax DebugMode Files: https://github.com/blacknight659/pk_t... (NOTE: PKtether.com site is currently down with malware. Above is a link to the most recent application 05/24/16) Nopad++ (text editor): https://notepad-plus-plus.org/downloa... Pentax Forums Other Links: http://www.pentaxforums.com/forums/10... Justin's Steps 1.) Download PKTether (pktether site) 2.) Download Camera Hack files (drop box) 3.) Download Notepad++ 4.) Open Pktether 5.) Place SD card into camera, connect camera to computer (USB cable) 6.) Turn on Camera In PKtether activate DEBUG MODE 7.) Copy Hack Files to SD card 8.) Disconnect camera from USB cable 9.) Power Down Camera, Power back on You are in Development Menu 10.) Scroll down to "Lens Rom Camera=SD" and hit OK. (it should go black, and then you will see the same screen again) 11.) Power off camera, Move SD card to PC and open it 12.) You are looking for the LENSEEP.LNS file. MAKE A BACKUP of this file - THIS IS LENS COPY SPECIFIC - ONLY YOUR FILE WORKS WITH YOUR LENS! 13.) Open LENSEEP.LNS with Notepad++ 14.) Replace ALL instances of "C0" in column "03" with "80". DO NOT REPLACE any instances of "C0" outside of column "03". 15.) Move the new LENSEEP.LNS file to your SD card (replacing the orginal, remember to back up the orginal) 16.) Power Camera on 17.) Scroll to "LENS ROM DAT SD= CAMERA" and hit OK ( you will see "Wait..." and then some text) NOTE: It failed the first time for me, needed to do it twice 18.) When Complete, lens should be in screw Drive 19.) Disable Debug Mode A.) Use camera settings Menue Button Scroll left until you see "Test Mode" Disable Debug Mode Hit OK B.) Connect to PKtether, Click Debug Mode Off