I went to my not so local Nikon dealer (250 mile round trip) today and purchased a brand new 200-500 lens. When I returned home and mounted it for the first time, I got the "triangle F0" or "delta F0" as some call it in the viewfinder. I actually only noticed that after I went to take a pic and nothing worked. So I went looking for what the error code is, and it turns out that the lens CPU is not communicating with the camera. I took the lens off and mounted a few of my other Nikon lenses, and all is good. I tried mounting it a few more times with no luck. I removed and replaced the battery flipped all the lens switches back and forth, no go. One thing that has me concerned is the CPU contacts are not really supported in place like all my other lenses, and they are just sort of there all by themselves, with no support at all. I looked again at the owners manual to make sure that something was not missing, and it looks just the same in the manual. All of my other Nikon lenses have a good solid piece that matches the CPU contacts all around, and seem much more rigid. Even if I do trade for another 200-500, the CPU contacts have me worried for long term durability (and stability) even in the short term, am I over-reacting? It just does not seem correct to me. The store where I purchased the lens will obviously trade it for another one, but now I am hesitant to do so. Another valuable lesson for me is to NEVER leave a store where I make a purchase again without attaching the lens for verification that it works, that is totally my fault, but this is the only Nikon lens that I have ever had be defective and I have purchased quite a few over the years from this same store. I should mention that I have this mounted on a Nikon D500
Jeff
Jeff
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