I've got both but no duplicates... I notice them going through the auction site quite often and at surprisingly low prices, too. The 135 2.5 really requires additional shading as the built-in is simply not adequate. The macro is actually a 55 and has some interesting manual/auto features. If you find one and would like the special instructions, let me know and I'll send you a scanned copy as it isn't initially obvious how it all works (at least it wasn't to me!).