I have the Pro-Optic flavor of this lens and find it fun to play with, both stills and time lapse. I de-clicked it for video. A fisheye is something I would not want to spend a lot of money on but I was happy with the price.
I used it with a 40D to take a time lapse of my homemade motorized slider in action, which was carrying a 60D with a Tokina 11-16/2.8 attached.
I don't know the policy on linking to / embedding youtube videos here on CR, so change 'yertube' in the pseudo-links below to 'youtube' to make them work
Text from fisheye video, which is at
Home made slider running for about 7 hours. Taken with Canon 40D and RokSamBow 8mm fisheye. One 15 second exposure every minute. On the slider is a 60D taking three 15 second exposures per minute. Note my neighbor's TRULY ANNOYING security light, I'll have to ask her nicely to aim it in a different direction or shield it. The timelapse made with this setup is at yertube.com/watch?v=WBwNGcLGH1g
I don't know that I want to, but how do you de-click it?