ryan stewart wrote:
Never heard of it turning evil. Everything I had heard was where they had shipped from the factory without a shim that was causing it to be bad. Cant really see that "turning" on you.
My guess is that the shim issue doesn't tell the whole story, i.e., there's more than one problem with this particular lens.
I received the 11-16 from B&H, took some test shots including a focus chart and did some extreme pixel peeping. Everything checked out. Two days later I took my verified good lens on a shoot. Somewhere during the early part of the day, it stopped focusing correctly. Unfortunately, I was only chipming now and then to check exposure. Only when I began working on the images did I discover that the vast majority of everything I shot with the 11-16 was unusable. I had to schedule a reshoot, which thankfully cost me only my time since no models or immediate deadlines were involved.
Testing it again, I discovered that I could not get a sharp frame by either auto focus or manual. My guess is that something inside the lens shifted. Would those magic shims have prevented this shift? Don't know, don't care. It's gone and that's that.
