35-350? Yikes. That sounds bad just looking at that 10:1 zoom ratio. I wouldn't expect something like that to be good throughout its range, and especially if not stopped down. I quite like zooms, myself, especially when you know what range they perform well in (I rarely need large apertures / shallow DOF). The worst, IMo, is a zoom that is mediocre throughout its range, which makes it unusable in any condition.