Why doesn't my new Oly 12-40mm autofocus?

Started Mar 6, 2014 | Questions thread
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Why doesn't my new Oly 12-40mm autofocus?
Mar 6, 2014

A few days ago I bought an E-M10 and the 12-40mm zoom.  Bizarrely, the 12-40mm wouldn't even try to autofocus when pressing the shutter button (it doesn't even try to focus; it acts like a manual focus only lens), and the super control panel says "MF" in the focus section of the panel.  I figured something was wrong with either the camera or lens, so I exchanged both.  But the same thing is happening with the exchanged pair.

I just mounted the 14-42 lens, and it focuses just fine.  So it is probably the 12-40 lens.  But 2 of them?  Am I doing something wrong?  Is there some setting I'm missing?  Or am I unlucky to have received 2 defective lenses?

 DavidB2's gear list:DavidB2's gear list
Nikon D600 Olympus OM-D E-M10 Panasonic Lumix DMC-GX8 +1 more
Olympus OM-D E-M10
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