7 out of 10 points and recommendedcenter-frame sharpness, weigthcorner sharpness, fragile manual focus ring
Center-frame sharpess is good as well as the natural colors it produces. Corner sharpness is much worse at low apertures as shown in the test results. It's is not a good choise for landscape photography nor portraits. Not only because of the corner sharpness, but also because of the severe distortion at 18mm.reviewed November 18th, 2005
I'm supprised by the test method used on this side. It reflects my personal experience 100%.
Hopefully all the commonly excepted and used lenses will be tested here soon (such as Canon's 70-200 F/2.8 and F/4.0, as well as the commonly used Tamron lenses).