I'm in need of one for my GX-1L, I'm really confused by all the nominclature out there (DG? EX? FA?) and could use some guidance.

I would like a really sharp lens, I have some dedicated macro lenses for my k1000 that function in manual mode just fine on my dSLR, but the other lenses I own range from modest to downright fuzzy when it counts, and I feel i'm at the skill level where this is holding me back...

Suggestions/comments are welcome.

Cheers!