I am experiencing same problem, does anyone have any idea?
I've been using a 9 year old pentax k-r. Recently it stopped focusing with af.
When I press the focus button it does activate the motor and try to focus back and forth few times then it stops without focusing.
When I switch it to MF and focus manually, it does beep when object is in focus. So I think af sensor works well.
When I try to focus in liveview mode the visual zooms in but no effort on af motor and it shows red out of focus square.
Lenses does work with my z1-p well.
What causes this problem and can it be fixed?
History about the problem: one or two years ago I bought 50mm and 28mm manual lens with pentax super me and started film fotography and shooting with kr occasionally. Until then I was only using kit lenses 18-55 and 50-200. When I started using those manual lenses it began to cause a problem with my kit lenses. When I put my af lens to kr it started show it as manual focus. Then I tried to unmount and remount it fixed the problem sometimes, sometimes not. Recently I decided to clean contacts with alcohol. However I used 80° lemon cologne as alcohol. It fixed the problem that night, but a day later it stopped autofocusing as I mentioned above. Then I tried to clean contacts again with isopropanol but it didn't help.
I've been using a 9 year old pentax k-r. Recently it stopped focusing with af.
When I press the focus button it does activate the motor and try to focus back and forth few times then it stops without focusing.
When I switch it to MF and focus manually, it does beep when object is in focus. So I think af sensor works well.
When I try to focus in liveview mode the visual zooms in but no effort on af motor and it shows red out of focus square.
Lenses does work with my z1-p well.
What causes this problem and can it be fixed?
History about the problem: one or two years ago I bought 50mm and 28mm manual lens with pentax super me and started film fotography and shooting with kr occasionally. Until then I was only using kit lenses 18-55 and 50-200. When I started using those manual lenses it began to cause a problem with my kit lenses. When I put my af lens to kr it started show it as manual focus. Then I tried to unmount and remount it fixed the problem sometimes, sometimes not. Recently I decided to clean contacts with alcohol. However I used 80° lemon cologne as alcohol. It fixed the problem that night, but a day later it stopped autofocusing as I mentioned above. Then I tried to clean contacts again with isopropanol but it didn't help.