Originally Posted by solisti 
Are sure the Tamron isn't front focused? seems like that on the F2.8 images.
not sure maybe due to where i cropped them ?
Originally Posted by kerrowdown I've never been a great fan of brick walls, the real test for me is how does it perform in the "real world" when capturing images.
It's so easy to get wrapped around the axle, enjoy your photography not the testing.
true but 85% of my photos are done at 17-70mm range and macro/close ups and nearly always i crop rather than resize, so guess there's more relevance in these tests for me