See here: http://goo.gl/qrd1A
Outside Aus, here: http://goo.gl/ZF6pY
These lenses are great fun, and the fisheye lens offers some really fantastic creative image making options
Gear used:
Lensbaby composer - http://www.lensbaby.com/lenses-composer.php
Fisheye optic - http://www.lensbaby.com/optics-fisheye.php
Velbon EX888 - http://maxwell.com.au/velbon/index.html
Nikon D5100
Nikon D700
Nikon 24-70mm f2.8
Video shot on Nikon D5100