For awhile I was considering getting either the Oly 40-150mm F2.8 or the Pana 100-400mm F4-6.3 for "macro-esque" shots. However, after using my Sigma 30mm F1.4, I've come to love the "simplicity" of a prime. The main prime lens that interests me is the Oly 300mm F4, but I'm also considering the new Pana 200mm F2.8 and the old Oly FT 150mm F2. If I want to get macro-like results without getting to close to the subject, which of the two Olies would be better? Given the specs we've seen, would the Pana be a good option?