hey guys, finally after 3 months of waiting found a good deal on the almighty P20. Good size (lot bigger than the P14), yes it is slow, but yeah "seems" sharper so far...love the FOV....anyway. Since this guy has "moving parts" not sure of using step up rings?, i used step up rings for my Canon 50mm that also has moving part without having any problems at all. also i want a really good CPL for this lens, but also read that in m43 linear Polarizers work as well...dont know why they could work? can someone explain me that? what is the difference in the metering from a DSLR? besides the obvious sans mirror? I have some 67mm polarizer and ND filters that i could adapt to the P20mm?