hmm. thanks for your advice. but just for curiousity, i saw in the buy/sell thread, it seem like alot of people selling canon 100mm usm macro lens. as you have said, it quite a good lens, but how come so many people selling it ah? why ah? lolx.
well, i just read that filter cant deliver veri clear image compare to macro lens. lolx. but aniwei, how much would it be for the filter of +4 for canon 550d? does it come with a set of more filter in it?
well. actually i'm looking into canon 100mm IS/non IS and sigma 150mm f/2.8 ex gd hsm macro lens, but nv use sigma lens before, so don't know how is it. or perhap consider getting macro filter?