What did I do wrong not able to AF fine adjust?

**lithedreamer** · 12-10-2016, 02:49 PM

Originally posted by clackers

You bought a DSLR to take charge of your images, so put it into single point, watch the point acquire focus and listen for the beep before snapping.

What beep?

**UncleVanya** · 12-10-2016, 03:30 PM

Remember also that the distance to the target is supposed to be 30-50x the focal length that you are testing it at.

Also the commercial Lensalign has visual aids that help align it to ensure that it is squared up and aligned accurately.

**clackers** · 12-10-2016, 03:50 PM - **1 Like**

Originally posted by lithedreamer

What beep?

You know, I still have mine turned on, it means that as through the viewfinder my eye is concentrating on the subject, the background and all the other settings, at least one thing is being offloaded to to my ears.

How un-pro of me!

gilbie2000 · 12-10-2016, 04:17 PM - **1 Like**

I double-checked published lens performance data for D-FA 28-108 to compare with my observation - turns out it is an excellent performer in nearly all cases - EXCEPT 105 mm f/5.6 edge - which happens to be EXACTLY my test condition.

(But even center resolving power is good at 105 mm f/5.6...) So maybe no need to worry about it, and remember not to use that particular combination when shooting.

gilbie2000 · 12-10-2016, 10:42 PM

I've updated firmware to latest 1.4.

I lit the test target better, and aligned target and camera on tripod better (still a little off). Here it is at +7 and then +8. Which setting do you think is better? I'm leaning towards +8.

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12-10-2016, 02:49 PM	#16
lithedreamer Site Supporter Join Date: Sep 2013 Photos: Gallery \| Albums Posts: 1,799	Originally posted by clackers You bought a DSLR to take charge of your images, so put it into single point, watch the point acquire focus and listen for the beep before snapping. What beep?

12-10-2016, 03:30 PM	#17
UncleVanya Loyal Site Supporter Join Date: Jul 2014 Photos: Gallery \| Albums Posts: 28,459	Remember also that the distance to the target is supposed to be 30-50x the focal length that you are testing it at. Also the commercial Lensalign has visual aids that help align it to ensure that it is squared up and aligned accurately.

12-10-2016, 03:50 PM - 1 Like	#18
clackers Otis Memorial Pentaxian Join Date: Jul 2013 Location: Melbourne Photos: Albums Posts: 16,397	Originally posted by lithedreamer What beep? You know, I still have mine turned on, it means that as through the viewfinder my eye is concentrating on the subject, the background and all the other settings, at least one thing is being offloaded to to my ears. How un-pro of me!

12-10-2016, 04:17 PM - 1 Like	#19
gilbie2000 New Member Join Date: Nov 2016 Posts: 20 Original Poster	I double-checked published lens performance data for D-FA 28-108 to compare with my observation - turns out it is an excellent performer in nearly all cases - EXCEPT 105 mm f/5.6 edge - which happens to be EXACTLY my test condition. (But even center resolving power is good at 105 mm f/5.6...) So maybe no need to worry about it, and remember not to use that particular combination when shooting.