Great price point if you want an APS-C fisheye, particularly with the shift feature (but that color smearing - ugh) - but speaking from experience, if you're after a macro lens think long and hard about what you intend to shoot. Inanimate objects aren't so bad - but there's not much fauna "in nature" that will allow you to press the lens against it to get a snapshot.
Nikon owners - for a couple hundred more you can land one of the awesome 200mm Micro Nikkors. Again just my opinion - but a far more "usable" macro if nature photog is your bag.
DonVIt's not a fisheye (though I believe that I've heard it suffers from distortion). The fauna that you would be trying to photograph with this in their environment can't get away because they're creatures like frogs and insects.
Nikon owners - for a couple hundred more you can land one of the awesome 200mm Micro Nikkors. Again just my opinion - but a far more "usable" macro if nature photog is your bag.