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<blockquote data-quote="GracieAllen" data-source="post: 517141" data-attributes="member: 41283">I looked at the link to flickr, but there's nothing about extension tubes, just a bunch of pictures........As for being superseded, I was bored, so this time I CALLED Kenko, and when I got the voicemail instead of a human in technical support punched out and had the operator find the (apparently) one technical support person.&nbsp; Got him and he went OUT TO THE WAREHOUSE, grabbed a BRAND NEW BOX of Kenko DG extension tubes, brought it back, opened it, and said &quot;YUP, THEY HAVE SEVEN CONTACT PINS.&quot;&nbsp; They don't have tubes with eight.&nbsp; SO, he's going to contact his &quot;technical&quot; person or tester or whoever, who will (in theory) grab one of the MANY bodies he told me they have (hopefully a D7200), strap on a lens and tube, and give it a try.&nbsp; I'm supposed to hear back next week...I got an email reply from Neewer, and apparently me email to them was too subtle (see the original entry in this topic), as they were asking for the sales receipt...&nbsp; I sent a reply that will HOPEFULLY clear up their confusion.&nbsp; I also got another call from Vello.&nbsp; They'll be doing some testing next week and will get back to me.&nbsp; Their tubes APPEAR to have eight electrical contacts, and the person with whom I spoke thinks it MAY be a firmware issue - they may need to update the firmware in the tubes since they were made PRIOR to the D800, D810, D7200 era...Hopefully, I'll have an answer next week that says they're NOT having a problem and it's me and all my equipment - in which case I'll try a different set of extension tubes.&nbsp; OR there IS a problem and the manufacturer will hopefully do something.</blockquote>

[QUOTE="GracieAllen, post: 517141, member: 41283"] I looked at the link to flickr, but there's nothing about extension tubes, just a bunch of pictures........ As for being superseded, I was bored, so this time I CALLED Kenko, and when I got the voicemail instead of a human in technical support punched out and had the operator find the (apparently) one technical support person. Got him and he went OUT TO THE WAREHOUSE, grabbed a BRAND NEW BOX of Kenko DG extension tubes, brought it back, opened it, and said "YUP, THEY HAVE [B]SEVEN [/B]CONTACT PINS." They don't have tubes with eight. SO, he's going to contact his "technical" person or tester or whoever, who will (in theory) grab one of the MANY bodies he told me they have (hopefully a D7200), strap on a lens and tube, and give it a try. I'm supposed to hear back next week... I got an email reply from Neewer, and apparently me email to them was too subtle (see the original entry in this topic), as they were asking for the sales receipt... I sent a reply that will HOPEFULLY clear up their confusion. I also got another call from Vello. They'll be doing some testing next week and will get back to me. Their tubes APPEAR to have eight electrical contacts, and the person with whom I spoke thinks it MAY be a firmware issue - they may need to update the firmware in the tubes since they were made PRIOR to the D800, D810, D7200 era... Hopefully, I'll have an answer next week that says they're NOT having a problem and it's me and all my equipment - in which case I'll try a different set of extension tubes. OR there IS a problem and the manufacturer will hopefully do something. [/QUOTE]

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