I don't shoot pictures of test patterns, and I guess that I must have an excellent copy, then! All I am saying is that the Canon vII is not @$800 better than the Tamron! The VC and AF are dead silent, as well!
Gary W.Hey all,
Get the Tamron! It is sharper than the Sigma, Canon IS vI, Canon non IS, and about the same as Canon's vII. It is also weather sealed, unlike the Sigma or the non IS Canon. At $1499, a very good deal when compared to vII and that it beats the rest!
Regarding "about the same as Canon's vII"
Canon is much better at 200mm f/2.8
You don't shoot test patterns but you just say that Tamron is ... about the same as Canon's 70-200 2.8 II.
However, test patterns are pictures which show much more than simple words like "is about the same"