AF Fine Adjustment

sadatoni · 04-12-2014, 07:28 AM

This morning I was attempting to adjust the AF fine adjustment for the 18-135 WR lens, but no matter which direction or amount of adjustment I made (option 3 so it was just for the particular lens), nothing changed.

Has anyone experienced this? What did you do to make it work (if it ever did)?

manacho2005 · 04-12-2014, 07:58 AM

Try adjusting-->then turning off-->unmount lens-->turn on-->turn off-->mount lens-->check focus. Seems tedious, but I found that to work best.

Unregistered User · 04-12-2014, 09:13 AM

Originally posted by sadatoni

This morning I was attempting to adjust the AF fine adjustment for the 18-135 WR lens, but no matter which direction or amount of adjustment I made (option 3 so it was just for the particular lens), nothing changed.

Has anyone experienced this? What did you do to make it work (if it ever did)?

Where you in Live View?

sadatoni · 04-12-2014, 10:18 AM

Originally posted by Tjompen1968

Where you in Live View?

No. Used the viewfinder.

---------- Post added 04-12-2014 at 10:28 AM ----------

Originally posted by manacho2005

Try adjusting-->then turning off-->unmount lens-->turn on-->turn off-->mount lens-->check focus. Seems tedious, but I found that to work best.

Thanks Matt! That worked.

John

manacho2005 · 04-13-2014, 07:14 AM

Glad to help!

TCerbo · 05-06-2014, 07:21 AM

Originally posted by sadatoni

No. Used the viewfinder.

---------- Post added 04-12-2014 at 10:28 AM ----------

Thanks Matt! That worked.

John

Can anyone tell me why Pentax/Ricoh would NOT fix this in a firmwear update, or do they NOT know it is a problem.
Hope to hear from someone soon.

stevebrot · 05-06-2014, 09:01 AM

Originally posted by manacho2005

Try adjusting-->then turning off-->unmount lens-->turn on-->turn off-->mount lens-->check focus. Seems tedious, but I found that to work best.

That does seem tedious. I have not had to adjust any of my lenses, but will have to remember this workaround.

Steve

Unregistered User · 05-06-2014, 09:31 AM

It works fine with all my lenses. No turning and twisting. A +1 or -1 adj. is visible but if at 18mm it may be hard to see. Also distance and f-stop is factors on how much depth of field you generate, i.e if it is visible.

**MJSfoto1956** · 05-06-2014, 10:19 AM

you do NOT need to turn your camera on/off between AF fine tune settings with the K-3. All you need to do is focus at something close to you, then move your camera to the test target using the new setting. Record your result. Change the AF fine tune, Focus again on something close to you. Again move your camera to the test target. Repeat until you have done all the tests. As a side note: I find using a large bird feather at a slight angle to be an excellent target (especially if the feather has a contrasty spot on it).

YMMV

Michael

karro · 05-06-2014, 11:59 AM

I second Michael. When I was toying around with focus fine adjustments, I focused, took a photo, checked the focus, adjusted, saved, refocused to something close (usually - a hand in front of the lens, it doesn't need to lock the focus, it just needs to change the focus distance significantly), then refocused on the target, took the photo, checked the results, etc.

I used GhettoCAL: A DIY Lens Calibration Tool for Microadjustment-Enabled DSLRs

bxf · 05-06-2014, 04:19 PM - **1 Like**

Of course for lenses that have Quick Shift, a flick of the focus ring will do the trick even faster.

awaldram · 05-07-2014, 02:11 AM

Originally posted by stevebrot

That does seem tedious. I have not had to adjust any of my lenses, but will have to remember this workaround.

Steve

Should not 'normally ' be required but I think the offset is stored in the lens rom or at least referenced from it.

So sometime the update is not loaded back and a bit of persuasion to re-read is required .

I never seen this with 'Pentax' DA glass.

04-12-2014, 07:28 AM	#1
sadatoni Forum Member Join Date: Feb 2009 Photos: Albums Posts: 87	AF Fine Adjustment This morning I was attempting to adjust the AF fine adjustment for the 18-135 WR lens, but no matter which direction or amount of adjustment I made (option 3 so it was just for the particular lens), nothing changed. Has anyone experienced this? What did you do to make it work (if it ever did)?

05-06-2014, 07:21 AM	#6
TCerbo Inactive Account Join Date: Apr 2009 Location: Clearwater FL Photos: Gallery Posts: 17	Originally posted by sadatoni No. Used the viewfinder. ---------- Post added 04-12-2014 at 10:28 AM ---------- Thanks Matt! That worked. John Can anyone tell me why Pentax/Ricoh would NOT fix this in a firmwear update, or do they NOT know it is a problem. Hope to hear from someone soon. Last edited by TCerbo; 05-06-2014 at 07:22 AM. Reason: spelling

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04-12-2014, 07:58 AM	#2
manacho2005 Veteran Member Join Date: Oct 2011 Location: Red Oak, TX Photos: Gallery \| Albums Posts: 462	Try adjusting-->then turning off-->unmount lens-->turn on-->turn off-->mount lens-->check focus. Seems tedious, but I found that to work best.

04-12-2014, 09:13 AM	#3
Unregistered User Guest	Originally posted by sadatoni This morning I was attempting to adjust the AF fine adjustment for the 18-135 WR lens, but no matter which direction or amount of adjustment I made (option 3 so it was just for the particular lens), nothing changed. Has anyone experienced this? What did you do to make it work (if it ever did)? Where you in Live View?

04-12-2014, 10:18 AM	#4
sadatoni Forum Member Join Date: Feb 2009 Photos: Albums Posts: 87 Original Poster	Originally posted by Tjompen1968 Where you in Live View? No. Used the viewfinder. ---------- Post added 04-12-2014 at 10:28 AM ---------- Originally posted by manacho2005 Try adjusting-->then turning off-->unmount lens-->turn on-->turn off-->mount lens-->check focus. Seems tedious, but I found that to work best. Thanks Matt! That worked. John

04-13-2014, 07:14 AM	#5
manacho2005 Veteran Member Join Date: Oct 2011 Location: Red Oak, TX Photos: Gallery \| Albums Posts: 462	Glad to help!

05-06-2014, 09:01 AM	#7
stevebrot Otis Memorial Pentaxian Join Date: Mar 2007 Location: Vancouver (USA) Photos: Gallery \| Albums Posts: 42,007	Originally posted by manacho2005 Try adjusting-->then turning off-->unmount lens-->turn on-->turn off-->mount lens-->check focus. Seems tedious, but I found that to work best. That does seem tedious. I have not had to adjust any of my lenses, but will have to remember this workaround. Steve

05-06-2014, 09:31 AM	#8
Unregistered User Guest	It works fine with all my lenses. No turning and twisting. A +1 or -1 adj. is visible but if at 18mm it may be hard to see. Also distance and f-stop is factors on how much depth of field you generate, i.e if it is visible.

05-06-2014, 10:19 AM	#9
MJSfoto1956 Site Supporter Join Date: Dec 2013 Location: Boston Posts: 1,305	you do NOT need to turn your camera on/off between AF fine tune settings with the K-3. All you need to do is focus at something close to you, then move your camera to the test target using the new setting. Record your result. Change the AF fine tune, Focus again on something close to you. Again move your camera to the test target. Repeat until you have done all the tests. As a side note: I find using a large bird feather at a slight angle to be an excellent target (especially if the feather has a contrasty spot on it). YMMV Michael

05-06-2014, 11:59 AM	#10
karro Senior Member Join Date: Mar 2014 Location: Riga Photos: Albums Posts: 245	I second Michael. When I was toying around with focus fine adjustments, I focused, took a photo, checked the focus, adjusted, saved, refocused to something close (usually - a hand in front of the lens, it doesn't need to lock the focus, it just needs to change the focus distance significantly), then refocused on the target, took the photo, checked the results, etc. I used GhettoCAL: A DIY Lens Calibration Tool for Microadjustment-Enabled DSLRs

05-06-2014, 04:19 PM - 1 Like	#11
bxf Veteran Member Join Date: Jul 2010 Location: Lisbon area Posts: 1,660	Of course for lenses that have Quick Shift, a flick of the focus ring will do the trick even faster.

05-07-2014, 02:11 AM	#12
awaldram Veteran Member Join Date: May 2008 Location: Hampshire Photos: Gallery Posts: 732	Originally posted by stevebrot That does seem tedious. I have not had to adjust any of my lenses, but will have to remember this workaround. Steve Should not 'normally ' be required but I think the offset is stored in the lens rom or at least referenced from it. So sometime the update is not loaded back and a bit of persuasion to re-read is required . I never seen this with 'Pentax' DA glass.

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