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<blockquote data-quote="GracieAllen" data-source="post: 572466" data-attributes="member: 41283">It's been a while since an update, but here's where things are.........&nbsp; After conversations with technical support this spring, and assurances they would verify my problem with autofocusing on the D810 with the Kenko DG tubes, they FINALLY informed me (a few months ago) that &quot;the microcode has been updated and the tubes will now work PERFECTLY with all of Nikon's cameras...&nbsp; You'll have to buy a new set of tubes for them to work, but they WILL WORK.&quot;SO, at the end of June, I ordered yet ANOTHER set of the tubes.&nbsp; Got 'em.&nbsp; Absolutely expected them to work perfectly with my regular close-up lenses - Nikon 70-200 f2.8 AFS ED G &lt;blah blah&gt;....&nbsp; NOPE.&nbsp; Still do EXACTLY the same thing.&nbsp; Try to focus, then sit there and jitter back and forth, jerking the focus point across a very small range.&nbsp; Tried several lenses, happens with all of 'em........&nbsp; Happens on the D810.&nbsp; Happens on the D7200.SO, I pulled out my cell phone, and made a video showing the focus display while it jittered back and forth.&nbsp; Then I stuck the cell phone camera to the eyepiece and videos what it looks like through the lens.&nbsp; Took picture(s) of what my setup was, what I was photographing, and so on.Then I called Kenko AGAIN, got technical support, and told yet ANOTHER person what it was doing.&nbsp; AND sent the video and pictures.&nbsp; Got an email telling me it was EXACTLY what they needed to see what was going on.&nbsp; Then I got another email telling me they'd submitted everything to Kenko Japan and were waiting for a response.&nbsp; Then a bit later (7/19/16) I got a response telling me they were still waiting...&nbsp; They're advertised everywhere as FULLY COUPLED, and WILL autofocus...&nbsp; Not on ANY of my equipment except my elderly D300, on which THEY WORK PERFECTLY......</blockquote>

[QUOTE="GracieAllen, post: 572466, member: 41283"] It's been a while since an update, but here's where things are......... After conversations with technical support this spring, and assurances they would verify my problem with autofocusing on the D810 with the Kenko DG tubes, they FINALLY informed me (a few months ago) that "the microcode has been updated and the tubes will now work PERFECTLY with all of Nikon's cameras... You'll have to buy a new set of tubes for them to work, but they WILL WORK." SO, at the end of June, I ordered yet ANOTHER set of the tubes. Got 'em. Absolutely expected them to work perfectly with my regular close-up lenses - Nikon 70-200 f2.8 AFS ED G <blah blah>.... NOPE. Still do EXACTLY the same thing. Try to focus, then sit there and jitter back and forth, jerking the focus point across a very small range. Tried several lenses, happens with all of 'em........ Happens on the D810. Happens on the D7200. SO, I pulled out my cell phone, and made a video showing the focus display while it jittered back and forth. Then I stuck the cell phone camera to the eyepiece and videos what it looks like through the lens. Took picture(s) of what my setup was, what I was photographing, and so on. Then I called Kenko AGAIN, got technical support, and told yet ANOTHER person what it was doing. AND sent the video and pictures. Got an email telling me it was EXACTLY what they needed to see what was going on. Then I got another email telling me they'd submitted everything to Kenko Japan and were waiting for a response. Then a bit later (7/19/16) I got a response telling me they were still waiting... They're advertised everywhere as FULLY COUPLED, and WILL autofocus... Not on ANY of my equipment except my elderly D300, on which THEY WORK PERFECTLY...... [/QUOTE]

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