Comments about Adorama Adorama Video C Mount for Nikon Lenses:

This Nikon designed mount will not lock the lens normally when applied. The lens has fallen off of the mount twice. I was lucky to catch the lens before it hit the floor. I would have to machine shop this mount to try to make it work. Shoddy workmanship. No wonder it is priced less than competing units. I should have paid more for a known brand that works.
The cheap person always pays more in the end. Avoid this unit and buy a known brand that works.