[sascha]

so, small update....i got lens from Tamron´s service center. They claimed that lens is in perfect condition and that problems are caused by Canon. My contra arguments were that they produced lens for FF canon bodies and that they didn´t mention in any document (handbook, guarantee or any other doc) that it can happen to get banding with AI servo or something similar, and akso that USM motor causes this problem. After that I was told to send it once again, they will reconcider issue once again.... camera is in caonc´s service last 3 weeks, cannot wait to get their explanation...