even i had same question in my mind.
as a replacement for kit lens, if i am using 17-40F4($885) or 24-105F4($1000) which is a better choice?
i think many will suggest for 17-40 for its 17mm wide end. but then i can also consider tamron 17-50 non VC which is quiet cheaper at F2.8 and also delivers sharp images.
what opinion do you guys have??