Dead AF on DFA* 1.4

Started Jan 4, 2019 | Discussions thread
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Adam007 Contributing Member • Posts: 611
Dead AF on DFA* 1.4
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Hi, All:

While traveling with the normally stellar 50 1.4 and my K-1, the autofocus has suddenly failed.  When I mount the lens, I get the manual SR focal length input screen, which quickly disappears (this is new).  Then, the display screen reads “MF” regardless of the AF/MF switch positions on the lens and body.  I’ve tried my other lenses; AF Is fine.  Wiped off the 50’s contacts; no dice.  This seems extremely odd for a Les that’s just a couple months old.  Any thoughts?  Hoping to use it for portrait sessions on the trip, and a little bummed.

Thanks for any insight!

Adam

 Adam007's gear list:Adam007's gear list
Fujifilm X100F Pentax K-1 Pentax smc DA* 300mm F4.0 ED (IF) SDM Pentax smc FA 31mm F1.8 AL Limited Pentax smc FA 43mm F1.9 Limited +5 more
Nikon Df Pentax K-1
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