Serial Number:
9013254
Of all the bad images related to the DA* 16-50 that I have seen on this forum, I think I had the worst copy of the lens. At all focal lengths and apertures, my images were blurry (double images) with the exception of the center area being very clean and sharp.
Replacement was due for delivery yesterday, but my wife didn't hear UPS ringing our doorbell. I'll report back after Monday with the replacement's serial number and test results.