Thank you very much for the very nice comments, @AiDon, @Mond, @el48tel, @RJRREID, and @BobKramer.
Mond - I am glad you have the same lens and like it, too.
Randy - I did use the latest version of AI Clear,
I should mention that Canon does make a 28-300, and I am sure the quality is wonderful. Sadly it costs 4 times as much as the Tamron lens, and extremely important to me, weighs three times as much