I have the Tamron 17-35. Preliminary shooting hints that this might just be a stunningly good lens. We'll see if further tests bear this out. I've done a series of comparison shots between the Tamron 17-35, Tokina 28-70, Pentax 24/2.0, Pentax FA28/2.8, Pentax F24-50 and Pentax FA24-90 at various focal lengths. I haven't had time to compile the results and probably won't before the end of the semester (got several major papers/projects I have to complete) but all the shots have been taken...
-- Mark Roberts Photography and writing www.robertstech.com

