This vintage of Nikon macros is the creme og the old scholl AF lenses and can be found used for little money. I have always wanted one and found one on MBP, which I bought for about 200 Euros.
A highly praised lens, which I wanted from the day the price was announced. At 800.- USD it's very reasonably priced considering how bright it is, how well constructed it is and how sharp it is.
The first wideangle I owned, and a real gem: wide, sharp, good colors and built to last. The mechanics were world class and the optical quality followed close troop.
A plastic lens in the deepest meaning of the word. Plastic case, plastic "glass", plastic mount, plastic everything. An a really shitty image quality, but that's the whole idea.
It can't get much worse than this! And that's the whole idea. A plastic lens, which doesn't even have a lens, but features a pinhole disc for extra mediocre image quality. For 20 USD...
The Muse is the latest version of original Lensbaby. It uses the same glasses as the Composer. It's pretty hard to control the results, but a lot of fun to use.