I'm looking for a lens to use in indoor low light situations (i.e. birthday parties, and other family gatherings.) I plan to purchase the Panasonic 20mm f/1.7 eventually, but I need something to hold me over until I can afford it. So I'm looking for a lens with similar focal length, that's fairly sharp wide open, and under $50 preferably. I have a Minolta 50mm 1.7 but that's too long, and it's also not very sharp wide open. Also, Minolta MD mount lenses would be nice as I've already got the adapter, but I'm open to other mounts as well. Does anyone have any suggestions? Thanks!