Tamron 17-35mm started acting up! Help!
I've been using my Tamron 17-35mm 2.8 for a couple of years now. Just recently it's been getting me some really weird distortion. The edges become blurred and looks a little like a zooming effect or motion blur. Nothing looks physically wrong with the lens and it isn't a sensor problem because it occurs on both my cameras. Has anyone seen this before? Why would it start to happen out of the blue?