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07-14-2009, 07:58 AM   #1
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Location: Vilnius, Lithuania
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1:1.7 50mm is not working with k100d


I've just received from ebay an old smc pentax manual lense 1:1,7 50mm, it fits perfectly on my pentax k100d, but camera is not working... Just "Av" sign is blinking on lcd screen... What might be the problem? Or these lenses just doesn't work on dslr cameras (I i was not clever enough to find this out before buying lense )

Thanks, and sorry if this was asked before...

07-14-2009, 08:02 AM   #2
Wheatfield's Avatar

Join Date: Apr 2008
Location: The wheatfields of Canada
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Check to make sure you have the use lenses off the A position (or words to that effect) enabled in the menu.
07-14-2009, 08:14 AM   #3
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Original Poster
Thank You!!!! It works
07-14-2009, 09:40 AM   #4
Marc Sabatella's Avatar

Join Date: Sep 2006
Location: Denver, CO
Photos: Gallery
Posts: 10,686
See the sticky thread on using manual lenses over in the beginner's forum for complete instructions on metering and using manual lenses.


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