Overall I really love this lens. It starts to back focus from 135mm on until 200 which has about 1.5 – 2mm error which is noticeable only below f/5.6, but that is pretty extreme and I think normal on telephoto zooms. (Test done on Focus Chart V2)
Daughter w/ new Disney mask that arrived @ same time as lens - I know, really bad lighting... 1/15 200mm ISO800 hand-held... = Still good shots!
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Some tests on text and DOF...
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PS Sorry, no ducks and its darn hot outside



