Just got my Nikon TC-14E II and it's not working with my D800.
With Nikon lenses the aperture blades close until you mount it on a camera and turn it on. Once you do that it will open the aperture to it's widest settings, that part is common amongst brands. When using my TC-14E on the D800 the blades never open on the lens. Same results with my 70-200 and 300mm lenses. With my D5100 it works just like it's suppose to, not a single issue.
I went ahead and reset my D800 to default settings and cleaned the contacts in the body but the issue remains. My D800 works perfectly without the TC-14E. My D800 also works perfectly with the TC-20E III.
Anyone see something like this before?