Canon Ef Vs Ef-S Lenses
Tamron AF 18-270mm vs Canon EF-S 18-200mm?

have any of you used the line of Tamron? I met him. i might get one lens like this, but I can not find any reviews that compare these lenses with extreme zoom ranges, only the individual tests. I found the dpreview.com to be very informative …

I have the Tamron 18-75 and rocks, very strong in all lengths. I really like, very fast (2.8 to end). I like the all-in-the-less I think it's a wash between Cannon and Tamron lenses at that length. I shoot with the 55-250 EF-S and is a very nice. I have seen some bad press on the auto-focus on the Tamron 18-270 which is very slow and it has retained