K10D won't autofocus

camel58 · 06-07-2011, 09:45 AM

I have a K10D and the auto focus does not work. At first I though it might be my lens so I took my 18-250 of and put my kit 18-55 back on but it does the same thing it just jerks back and forth only about an 1/8 of an inch. I know this is good practice for me , to learn quick manual focusing skills but there are time when I really need the AF. Has anyone else had this problem? please help

yusuf · 06-07-2011, 11:02 AM

See if this works

https://www.pentaxforums.com/forums/pentax-dslr-discussion/138707-pentax-k10d...us-solved.html

**Ash** · 06-07-2011, 01:09 PM

Try also changing your battery and cleaning the contacts then retry AF.

Angus18 · 06-08-2011, 05:41 AM

Hi ,dear friend, I am not sure if it was related to your experience, each AF sensor actually covers quite a large area, not just a tiny portion like those on old AF film bodies. And mate this with sensor misalignment (against the focus screen), the camera might not AF on something you think it was AF on. The picture below is how the AF sensor of my DS looks like in reality after some quick tests (the actual cross shapes are not accurate btw). Within each sensor coverage, the camera might pick on any point to AF.

Thanks............

stevebrot · 06-08-2011, 07:54 AM

Originally posted by Angus18

Hi ,dear friend, I am not sure if it was related to your experience, each AF sensor actually covers quite a large area, not just a tiny portion like those on old AF film bodies. And mate this with sensor misalignment (against the focus screen), the camera might not AF on something you think it was AF on. The picture below is how the AF sensor of my DS looks like in reality after some quick tests (the actual cross shapes are not accurate btw). Within each sensor coverage, the camera might pick on any point to AF.

Thanks............

@Angus...Welcome to the forum. Unfortunately your illustration does not display.

Steve

06-07-2011, 09:45 AM	#1
camel58 New Member Join Date: Dec 2008 Posts: 2	K10D won't autofocus I have a K10D and the auto focus does not work. At first I though it might be my lens so I took my 18-250 of and put my kit 18-55 back on but it does the same thing it just jerks back and forth only about an 1/8 of an inch. I know this is good practice for me , to learn quick manual focusing skills but there are time when I really need the AF. Has anyone else had this problem? please help

06-08-2011, 05:41 AM	#4
Angus18 Inactive Account Join Date: Jun 2011 Location: USA Posts: 1	Reply: K10D won't autofocus Hi ,dear friend, I am not sure if it was related to your experience, each AF sensor actually covers quite a large area, not just a tiny portion like those on old AF film bodies. And mate this with sensor misalignment (against the focus screen), the camera might not AF on something you think it was AF on. The picture below is how the AF sensor of my DS looks like in reality after some quick tests (the actual cross shapes are not accurate btw). Within each sensor coverage, the camera might pick on any point to AF. Thanks............

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06-07-2011, 11:02 AM	#2
yusuf Pentaxian Join Date: Nov 2008 Location: Palo Alto, CA Photos: Gallery Posts: 2,497	See if this works https://www.pentaxforums.com/forums/pentax-dslr-discussion/138707-pentax-k10d...us-solved.html

06-07-2011, 01:09 PM	#3
Ash Loyal Site Supporter Join Date: Mar 2007 Location: Toowoomba, Queensland Photos: Gallery \| Albums Posts: 23,920	Try also changing your battery and cleaning the contacts then retry AF.

06-08-2011, 07:54 AM	#5
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by Angus18 Hi ,dear friend, I am not sure if it was related to your experience, each AF sensor actually covers quite a large area, not just a tiny portion like those on old AF film bodies. And mate this with sensor misalignment (against the focus screen), the camera might not AF on something you think it was AF on. The picture below is how the AF sensor of my DS looks like in reality after some quick tests (the actual cross shapes are not accurate btw). Within each sensor coverage, the camera might pick on any point to AF. Thanks............ @Angus...Welcome to the forum. Unfortunately your illustration does not display. Steve