Originally I was tempted to go for the cheaper option of getting a fish-eye filter, but having heard some good things about the fish-eye lenses, I decided to go for this. When the lens arrives, it doesn't actually come in a sealed box and none of the interior packaging is sealed, which makes it very hard to tell if this has been used previously. However, with that small issue aside we can move on to the lens itself. I was pleasantly surprised with the quality of this lens. The focus ring is smooth and the lens does not feel like a cheap-plastic one.
There were no issues fitting the lens on, so within seconds I was ready to go. This is a manual focus lens and although there are some more expensive auto-focus ones out there, I don't feel they're worth the extra money. Focusing has not been an issue at all. There's also an aperture ring which definitely comes in handy because I find using the automatic settings on my Canon 550D produces images that are sometimes to bright.
As for the actual images, well I really love how they turn out! In the video I've included some very basic shots (they're not very artistic, but they demonstrate the capability of the lens). What's so great about this lens is that you can use it as a standard one as the level of fish-eye distortion is under your control by the way you hold the camera. I definitely don't regret buying this, and it's already become my favourite lens to use.