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03-25-2013, 07:33 PM   #1
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Pentax M 28mm 2.8 Not Firing on K-5

I recently purchased an old M 28mm 2.8 lens off ebay, but couldn't get it to fire. Is there any settings I need to change on the camera to adjust for for legacy glass? It automatically goes into aperture priority and shows it at F--. I'm not sure what to do or if my lens is a dud.

03-25-2013, 08:36 PM   #2
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Yes, you need to change a setting. Follow this guide:

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03-25-2013, 09:52 PM   #3
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  • Enable aperture ring
  • Shoot in M mode
  • Use green button to get meter reading


(...your camera manual is your friend...and the sticky (above) is a great starting place...)

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