08-31-2015, 02:08 PM
Quote:Nikon has some of the better testing in the industry, actually. Or at least they did a few years ago, but I doubt that has changed.The 300 f4 VR PF does not have a failure problem, but rather a VR design issue. The D600 got specks/spots right away too. The D800's left AF issue was not the failure type, nor was the D750's mirror box flare issue of that kind. I think that is what JoJu is referring to, and wondering why the new 24-70mm VR is postponed.
"failure" type problems require more prolonged testing, but that is not the kind of thing done before a lens goes out the door (it would dirty it too much).