I have a Sony dslr-a200 and the lens I use is a Sony DT 3.5-5.6/18-70 SH0006. One of my first grade students dropped my camera. It's working fine with the exception of the auto focus portion of the lens. My camera is my prize possession because I use it daily in my classroom! I'm worried about the repair and/or replacement costs because I don't have any extra cash and I'll need to use my camera again starting Aug. 11th when school resumes!! Any help would be greatly appreciated!!!!

SOURCE: Auto-focus does not work

lower focus mirror post needs to be fixed

Mando Mojica

• 643 Answers
• Posted on Jun 02, 2009

SOURCE: sigma 70-300 +''no lense attached'' w/ sony a200 dslr

clean brass contacts with qtip and rubbing alcohol. let air dry couple of hours. do the body and the lens. hope that helps

SOURCE: dropped the lens, the focus ring won`t move

http://www.ejarm.com/photo/ef5018iidis/

Posted by another user, this is how to take it apart and fix it yourself. your exact problem is listed as fixable through this process. Good luck. Have the same lens and love it, even if it IS cheap.

SOURCE: Lens will not auto focus any more.

Hi there!

I experienced the exact same problem with my 100-300mm lens and I was never able to get it to work correctly again. In fact, attempting to use it further seemed to exacerbate the problem.

The further you zoom, the wider the aperture opens allowing more light for the camera to focus properly. If the aperture mechanism is damaged, the auto-focus process may not work as it should; which would explain why the auto-focus feature works only when at 18mm.

Regardless, I strongly recommend you discontinue use of the lens until a professional technician can examine the lens and figure out what's going on. I'm sure you can contact the manufacturer to open a support case or you can find a camera store that offers repair services.

I hope this helps!

Testimonial: "Thanks, I'll check with Nikon. I appreciate the help! Don "

SOURCE: The lens kit of my Sony DSLR A200 produces noise

If it's in continuous auto-focus and doing it, then it is just not locking on to one thing and jumping back and forth between two objects that are very close together in distance and it is normal. It should stop in manual, single shot or single point auto-focus. Sony uses Nikon auto-focus technology and my D-300 with a 70-200mmf2.8 will do it if I turn the auto-focus tracking time(lock-on) all the way down with the auto-focus in full auto.

Testimonial: "Thanks for the info"