Going to buy a lens, or two for my Sony A230. So far I'm looking at the Minolta AF 28-100mm F/3.5-5.6, and the MINOLTA AF 50mm f1.7. Taking in the crop factor of my sensor. These two should give me a good range along with my kit lens. I mostly do outdoor shooting, and I'm getting into portraits more as well. I am also considering the Sigma 28-70 F2.8. Both Minolta lens together will cost the same of the Sigma. Do you guys have any suggestion for other Minolta, or Sony lenses? My budget will be around $150 at most.