[frank]

I think this is a good post which raises a common question in lens selection. My feeling is that, as a non-professional photographer it is offen that one does not have a relatively focused phtographing subject. This causes the selection of lenses to be somewhat complex since the photographing subject is diverse. For me, before I decide to buy a lens I always ask myself if I will use the lens often after I buy it, if money is not an issue. If it is not likely that I will use it often then I will not buy the lens.