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11-30-2013, 03:17 AM   #1
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K-5 and DA* 300mm F4 ED [IF] SDM autofocus problem?

My DA* 300 has trouble focussing to infinity from it's closest focus point on my K-5 body. When I tried focussing on the same spot using it on my K20D it had no problem focussing out to infinity from it's closest focussing point . I noticed the same happen once in a while when I used my DA 55-300 on my K-5 and I thought I never really thought anything of it, but now that it's happening with the DA* I think it could be the autofocus of the K-5 that's not normal. Has anyone else noticed this happening with their K-5 and DA* 300?

11-30-2013, 12:02 PM   #2
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I usually only have the issue in low light.
If I have the issue under good contrast, I know its time to clean the two SDM contacts on both the body and lens.

In low light I just make sure I am in the middle of focus. The camera has an easier time finding it's target when its' time to shoot.

11-30-2013, 05:42 PM   #3
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AF requires power. Make sure your batteries are topped up and you have clean lens/body contacts for optimal performance.


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