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<blockquote data-quote="hark" data-source="post: 740119" data-attributes="member: 13196">Ugh. This problem still exists. I took some photos of ducks at a nature center - shutter speed as slow as 1/800&quot; with excellent results using both Normal VR and Sport VR. Then I went elsewhere and came across a vulture. Several of those vulture images are heavily front focusing while a few are fine. It makes no sense. But the ones that heavily front focused were in Sport VR as were all of the vulture images. So not sure if Sport VR is the issue; however, I don't think that problem has occurred with Normal VR.&nbsp;Plus yesterday I mentioned how the Normal VR always had a tendency to make the image jump in the viewfinder - you can go to this post and view images 4, 5, and 6 to see how the duck wasn't in the same position for consecutive images: <a href="https://nikonites.com/other-photography-equipment/44655-refurb-1-7x-tc-300mm-pf.html#post739587" target="_blank">https://nikonites.com/other-photography-equipment/44655-refurb-1-7x-tc-300mm-pf.html#post739587</a>But yesterday (after having removed stuck cotton fibers from a lens contact), Normal VR worked fine. Yet today it was acting up, too. This is such a pain to diagnose. :indecisiveness: And I haven't removed the lens or TC since removing the cotton fibers.</blockquote>

[QUOTE="hark, post: 740119, member: 13196"] Ugh. This problem still exists. I took some photos of ducks at a nature center - shutter speed as slow as 1/800" with excellent results using both Normal VR and Sport VR. Then I went elsewhere and came across a vulture. Several of those vulture images are heavily front focusing while a few are fine. It makes no sense. But the ones that heavily front focused were in Sport VR as were all of the vulture images. So not sure if Sport VR is the issue; however, I don't think that problem has occurred with Normal VR. Plus yesterday I mentioned how the Normal VR always had a tendency to make the image jump in the viewfinder - you can go to this post and view images 4, 5, and 6 to see how the duck wasn't in the same position for consecutive images: [URL]https://nikonites.com/other-photography-equipment/44655-refurb-1-7x-tc-300mm-pf.html#post739587[/URL] But yesterday (after having removed stuck cotton fibers from a lens contact), Normal VR worked fine. Yet today it was acting up, too. This is such a pain to diagnose. :indecisiveness: And I haven't removed the lens or TC since removing the cotton fibers. [/QUOTE]

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