Broken Pentax DA* 50-135/2,8 on K20D (screw drive)
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![Pentax K-5 and DA 18-135mm F3.5-5.6 AL ED [IF] DC WR focusing speed (listen closely)](//s.ytimg.com/yt/img/pixel-vfl3z5WfW.gif)
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How did you convince the K20 to use the screw drive?
octavmandru 9 months ago