Bill Emmett wrote:
I had the same problem when I bought the Canon 5D Mark IV. I sent my lens in to Tamron Service Center, in New York. I was back in less than 10 days. They also cleaned, calibrated, and made adjustments to some of the elements, plus added my 6D specs, and 7D Mark II specs to the program chip, and removed the other camera specs of models I don't own. This makes the focus faster, and more accurate. Of course, it now will work with "live view"
B
I'm so glad that they clean them. I have quite a bit of dust in the lens, and while I don't think it has impaired my image quality, I believe it would bring down resale value if I tried to sell it. No plans to sell it, though, because it has been a gem for birds, wildlife and football.