Instruction: Given a question and the related document, and generate the answer to the question based on the information provided in the document.

Input:
Question: A7
Document: The 36 megapixels image are stunning. If youhave high quality Nikon lenses, this adapter will make the most of them when you mount them on the Sony Alpha A7r. Performance should be similar for the A7. For the price, this adapter is a good deal.My credentials: I am professional landscape, stock, and fine art photographer.
I use this adapter on a Sony A7 with Nikon manual focus lenses.I like how it works,like the price,though I bought a Rainbow imaging adapter that is at least as good and half the price. I don't like the fancy blue ring. All black would be better
sold my Sony NEX-5 before had a chance to use this so cant report in depth but just looking at it the quality seemed fine. Didn't see any flaws to report
fits very secure to camera and lenses.Very sturdy adapter.Fits all my nikon lenses perfectly.Would recommend this as a good buy
definitely works with my nex 5r. tried my nikon 35mm, 50mm and my 105 micro. better than buying new lenses
You're better off getting a good 18-300mm Sony lens built for the NEX, but if you have a bunch of Nikon lenses and like to shoot manual focus, the meter works fine and you should be able to get good results.
Works perfectly. Fits well. Controls g diaphragms and works with lenses whose diaphragms can be controlled on the lens. I recommend it for nex7.
Works okay solid construction. I wish the iris had more resistance between stops. It is easy to turn therefore easy to move beyond your initial settings incidentally.
Works as advertisedMachining of the product looks very good.Aperture ring allows only 4 settings, but makes it possible to work with Nikon lenses without an manual aperture ring.
With the 300mm f/2.8 though, the lens is well over 5 pounds, so I obviously hold the kit by the lens in this case.One thing to remember, you won't want to hold this set up by the camera only if you are attaching a lens much heavier than the 50mm I have listed above. It's about 7 ounces.
Answer: All E Mount Adapter & E Mount Lens can be use on A7/A7R.