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Forum: Pentax K-3 & K-3 II 01-23-2018, 07:04 PM  
K3-II focus issues
Posted By enricoman
Replies: 27
Views: 5,284
Thanks for the suggestion regarding the rear AF button. Regarding my original post, I tried all troubleshooting steps to no avail. I'm sick of not being able to rely on the camera so sent it in for a service. I'll update once I hear from the service centre.
Forum: Pentax K-3 & K-3 II 12-10-2017, 06:59 PM  
K3-II focus issues
Posted By enricoman
Replies: 27
Views: 5,284
Hey, thanks for the detailed replies everyone and sorry for the late follow-up. I'm running through the suggestions now beginning with cleaning the contacts on the camera & lenses with isopropyl alcohol. I'll report back in with results.
Forum: Pentax K-3 & K-3 II 12-07-2017, 08:42 PM  
K3-II focus issues
Posted By enricoman
Replies: 27
Views: 5,284
I'm not sure how or when this issue popped up, but my Pentax K3-II can't focus correctly anymore. I tried on both my lenses and encountered the same issue:
DA* 16-50mm
DA* 50-135mm

Following advice elsewhere on Pentax Forums I adjusted the AF fine adjustment to +10, which almost has it right, however I've noticed that when shooting at f2.8 the picture seems hazy, especially towards the edges of the image. Even at f22 the image isn't completely clear. Here are a couple of sample shots:

DA* 16-50mm
f2.8 ISO100 - AF point at white dot with +10 AF fine adjustment
https://i.imgur.com/FFpvjsv.jpg

DA* 50-135mm
f2.8 ISO100
https://i.imgur.com/L130nNb.jpg

DA* 50-135mm
f22 ISO100
https://i.imgur.com/1rkD5oJ.jpg

Is this something I can fix myself or a service centre job?
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