Pentax SDM to Screwdrive Autofocus Conversion

Hello everyone, this video demonstrates how to complete the SDM to screw drive auto focus conversion for the older Pentax camera lenses! Here is what you'll need: (I do not own or maintain these programs; use at your own risk) PKTether: https://drive.google.com/file/d/0B2uv... ^^^ Link may be dead. Try blacknight659's github: https://github.com/blacknight659/pk_t... Click on the 'PK_Tether_0_7_0.zip' link and then click on the 'View Raw' link at the bottom to download the files Debug Files: https://www.dropbox.com/sh/k464hmts3b... ^^^ Link may be dead. Try blacknight659's github: https://github.com/blacknight659/pk_t... Click on the 'enable Debug Menu.zip' link and then click on the 'View Raw' link at the bottom to download the files Big thanks to blacknight659! Notepad++: https://notepad-plus-plus.org/downloads/ Pentax I-USB7 USB Cable List of compatible lenses: smc PENTAX-DA* 16-50mm f/2.8 ED AL [IF] SDM smc PENTAX-DA* 50-135mm f/2.8 ED [IF] SDM smc PENTAX-DA* 200mm f/2.8 ED [IF] SDM smc PENTAX-DA* 300mm f/4 ED [IF] SDM Compatible cameras (I think): K-5 IIS K-5 II K-5 K-r K-20D Time stamps: 1:12 - Skip background 1:41 - Download PKTether and connect camera to computer 2:24 - Enter camera into debug mode 2:44 - Download debug files 3:21 - Access development menu(4) and extract lens data 4:14 - Make backup of .LNS file 4:43 - Replace C0 with 80, but only in column 03 6:20 - Upload the edited code into the lens 7:00 - Exit debug mode and format SD card 7:21 - UncleVanya Conversion Service: https://www.pentaxforums.com/forums/2... Send us stuff! Stephen Foster PO Box 99900 WU 227 122 RPO Meadowbrook Edmonton AB T6T 0W4