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08-06-2010, 07:29 PM   #1
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DA 15mm infinity focus lock problem

Hi guys,

I'm sure I read something about this when I was researching my super-wide, but damned if I can get the Search function to find it again....so apologies for the duplication, but I'm concerned.

Just having my first try with the DA15 and she is pumping out some nice images, even close focus is giving me nice results. However, the lens (or K20D) is protesting intermittently about locking focus at infinity. Anything less than a metre (3 feet) is fine, but once she needs infinity she struggles or refuses to lock....no hunting....just iffy focus confirmation.

Anyone else familar with this issue? (again I'm sure I've read this somewhere before). Fingers-crossed it's not a warranty job - as I'll be without it for at least a fortnight and I've waited so long and she's not long arrived


Last edited by stillshunter; 08-06-2010 at 07:42 PM.
08-06-2010, 07:47 PM   #2
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It's an issue with wide angle AF lenses in general on Pentax cameras. This is where MF comes in.
08-06-2010, 07:53 PM   #3
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Seriously Hang?

You found this with the DA12-24 as well?....Just want to make sure this is not down to any MF crusade
08-06-2010, 08:03 PM   #4
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I believe it's a problem with the camera body's inability to decide what exactly to focus on.

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