It was kindly pointed out to me on another thread that the lenses I was thinking of buying were "overlapping", so I would really appreciate some guidance on which ones to pursue. My budget is about $700 +/- per lens, and I certainly don't mind buying used from a reliable source. I'm not looking for the best of the best (obviously, with that budget!) but want the best for the buck.
My shooting priorities are: (1) candid people shots (grandkids/couples/children); (2) landscape/outdoors (waterfalls, forests, cemetaries, mountain vistas) and (3) sports and birds requiring zooming in for tight shots. I have a Canon EF 75-300mm 4-5.6 that I've been using, but not always thrilled with the results...can this lense be "boosted" somehow?
Thanks in advance! Love this site, i am learning so much!