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Simple auto-focus calibration for DSLRs with adjustable settings.
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<blockquote data-quote="skater" data-source="post: 471149" data-attributes="member: 19158"><p>I was playing with this last night, using <a href="https://photographylife.com/how-to-quickly-test-your-dslr-for-autofocus-issues" target="_blank">this method</a> (which someone linked to, but I can't find the post). YIKES. Minus 20 and it's still not quite right, with two lenses. The difference between live view and the viewfinder focus was apparent even before I started zooming in. I always thought the "noise" I was seeing close up was from pixel peeping or the anti-alias filter, but that all went away with the live view focus.</p><p></p><p>I'm going to try it again with better lighting. If I send my D7000 in for repair, I want to be certain it actually needs to be repaired.</p><p></p><p>What got me wondering was that my Tokina 11-16 lens often seems to struggle with focus at anything other than 11mm. I took some pictures of a DC-3 at the Henry Ford Museum with it, and the 11mm picture looks reasonably crisp and clear, but the ones where I zoomed in a bit were badly focused, and I had to delete them. Of course, it's possible the Tokina has some issues of its own, too.</p></blockquote><p></p>
[QUOTE="skater, post: 471149, member: 19158"] I was playing with this last night, using [url=https://photographylife.com/how-to-quickly-test-your-dslr-for-autofocus-issues]this method[/url] (which someone linked to, but I can't find the post). YIKES. Minus 20 and it's still not quite right, with two lenses. The difference between live view and the viewfinder focus was apparent even before I started zooming in. I always thought the "noise" I was seeing close up was from pixel peeping or the anti-alias filter, but that all went away with the live view focus. I'm going to try it again with better lighting. If I send my D7000 in for repair, I want to be certain it actually needs to be repaired. What got me wondering was that my Tokina 11-16 lens often seems to struggle with focus at anything other than 11mm. I took some pictures of a DC-3 at the Henry Ford Museum with it, and the 11mm picture looks reasonably crisp and clear, but the ones where I zoomed in a bit were badly focused, and I had to delete them. Of course, it's possible the Tokina has some issues of its own, too. [/QUOTE]
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Simple auto-focus calibration for DSLRs with adjustable settings.
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