Forgive my ignorance regarding macro photography. Was giving some thought (dangerous) to this area of photography. In the old days it seemed that many lens used for macro work were in the "normal" range (~55mm) + add an extension tube or two. In theory lens extension factor (extension2/focal length2) would result in a "slower" lens. The Pany 20mm being a 40mm (35equiv) and relatively fast would seem to make for a decent macro lens in addition to other positives attributes. Misguided by fragments of info? Not wanting to invest in macro specific lens plus lusting for a 20mm was thinking the 20mm + tubes would also double up as a decent macro lens? Note to Barrie (Greberman)if he views this post: On the "Extension Tube?" thread you noted in post #10 extension tubes made specifically for mu43. Were the bird feather images made using those tubes? If so, are you happy with the tubes? Who makes them?