One minute I am for the Canon 16-35f4 and the next minute I am all for the Tamron SP 15-30mm f2.8 Di VC. Have looked and read reviews and charts and its still a toss up right now. Wondering if anybody has worked with both lens and could shed some light on it. That 2.8 kinda makes my mouth water, but then the Canon will do the same thing....
definitely want to make the right decision.....
advise anybody????

