I had a Maxxum 7D and now, a 2nd hand Sony A77. My Minolta AF 24-105 /3.5-4.5 D finally failed. I got another one on ebay that's full of dust and fungus. It was my most often used lens but the images seemed a little soft. So I'm looking for suggestions. Sony made a 24-105 so that would have to be newer than a Minolta, but better? I've been reading good things about the Sigma 24-105 A mount art lens. Almost 2 lbs...not a deal breaker..but that seems way heavy. Is there anything else out there in A mount that takes a sharp image and doesn't break the bank. I just can't afford "G" glass.