Having problems with your Pentax K10D Digital Camera ?

Slow to autofocus and sometimes will not focus at all with my pentax k10d slr digital camera with a pentax 16-50 da lens. when I switch to manual focus the camera works fine.

Answers :

Clean the contacts on the camera body and the lens where they connect with a cotton swab lightly dampened with rubbing alcohol.
Repair Help & Product Troubleshooting for Pentax K10D Digital Camera

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