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If stabilization is important, m4/3s and Samsung are the only options. Sony's only macro lens for the NEX doesn't have OSS, same goes for Fuji. I have no experience with any Samsung camera or lens, so their 60mm might be the best macro ever. I have no idea. To me, going Oly makes more sense, simply because you can get stabilization with or without an OEM lens, and that opens up the use of a lot of great MF macro lenses. You can pick up a lightly-used OMD between eight to nine hundred, and that leaves you with a nice lens budget. If AF is important, you've got good options with the LeicaPanny or the Oly. If you'd rather go MF, I'd look at the Leica 60/2.8. You'll be able to find one well within your budget and I think the colors are right on par with what you're seeing in Cal's beautiful samples from the 45.