I finally got a chance to get out and scratch my shooting itch with my 43 and recently acquired extension tube set. Here are a few pics from this afternoon's shooting.
Overall, I'm pleased with the results.
macro_and_close_ups Photo Gallery by Heather at pbase.com

Heather

I didn't actually use the extension tubes with this one, but it shows you how amazing of a lens that the 43 is.
http://i.pbase.com/g1/36/816636/2/92430525.cEeCN5OF.jpg

http://i.pbase.com/g1/36/816636/2/92430296.CU2hBGxf.jpg
http://i.pbase.com/g1/36/816636/2/92438436.Rjw8mnCi.jpg
http://i.pbase.com/g1/36/816636/2/92438447.1FCaeMuE.jpg

[NaClH2O]

Great florals Heather. I really like the macro of the magnolia blossom and the blue pansy with the water droplets. But they all are great. And I have to admit that I'm very jealous that youse guys already have blooming Magnolias, up here in NYC we'll have to wait till mid to late April.

NaCl(but then again, you prolly envy me in the fall)H2O

[G M Fude]

My favourite is the stamens (image 967), Heather. Narrow depth of field with extension tubes is a pain to work with but by gee it can give some marvellous photos, as your shots show.

[roentarre]

Very nice collection there! Floral shots are always hard to do well.

[Peter Zack]

I like the last one as well. Very tight DOF but you handled it well.