Macro for Minolta

[gender bombs]

Does anybody know where I can find some good macro lenses for a manual focus minolta?? Ive been searching and all I can find is autofocus. I did come across two though. Are they any good? Sigma 28-300mm f/3.5-6.3 Macro Lens and Sigma 28-135mm f/3.8-5.6 Aspherical IF Macro Lens
Replies would be highly appreciated, thanks.

 

[kelox]

Hey there gender bombs(what's up with that?), I have two sigma lenses,
the Sigma-28-80mm f3.5-5.6 Macro and the Sigma-70-300mm f4-5.6 DL Macro. There are ok, but keep in mind I'm stationed in Iraq right now and don't have much to use them on. While I was home on leave they did perform well, but I didn't really test them like I wanted, my time was short and demand was high. I think you should be happy with it/them. Let me know if you have a specific question and I will try my best to answer.