Pentax DA* 16-50 drive Screw! No SDM - how to inside
Pentax DA*16-50 powered by Screw drive. say NO to SDM. (tested by Kx K30)
Pentax DA*16-50 f2.8 SDM To Screw drive
Pentax SDM to Screwdrive Autofocus Conversion
This is the lowest rated Pentax DA* lens - Pentax-DA* 16-50mm f2.8 Review
Pentax 16 50 f2 8 SDM problem
Pentax K-5 + DA* 16-50 AF comparison (SDM vs Body motor)
Pentax DA* 16-50 f/2.8 PLM Overview
Pentax 16-50mm SDM autofocus not working
Pentax DA* 16-50mm zoom lens - 60 SECONDS of CREATIVITY
PENTAX DA 16-50mm Review
Pentax SDM to Screwdrive Autofocus Test
PENTAX DA* 16-50 F/2.8 PLM Minimum focus distance. It's crazy close.
How to exchange motor SMC Pentax-DA* 16-50mm F2.8 ED AL [IF] - defective SDM
Pentax DA* 16-50mm f/2.8 zoom lens review
How to repair Pentax lens SMC DA* 16-50mm F2.8 ED AL [IF] SDM with focus problem
Pentax DA* 16-50 F/2.8 PLM AW focus speed in AF.S and AF.C
Pentax K-3 with DA* 16-50 versus Nikon D7100 with 17-55 single-AF focus test
HOW TO: Convert SDM to ScrewDrive - Pentax
[AF speedtest] PENTAX-DA★ 16-50mm F2.8