I'm looking for a good zoom lens with a large focal range (like the Tamron 18-270). i know you lose some sharpness with these lens, but i'm looking for the versatilty it offers. has to be under 500 and preferabley under 350. i'm mainly looking for the most bang for your buck. like to me, the Tamron 18-250 seems to be a better value than the 18-270, but i really don't know. any ideas? i'm completely new to this and really don't know what to look for.




