Summary: After using some sub-par fisheyes in the past, I am incredibly pleased with the quality of the field of vision of this lens. Absolutely NO vignetting. For the price, its a no-brainer for shooting skateboarding (as I do) or other action sports.
Summary: I never leave home without this amazingly fun and crisp lens! The widest fisheye I've seen and at this price it's a MUST HAVE! I laugh at the fisheye L lenses after seeing the fantastic results I get from my Opteka!
Good Value, Not Easy to Use, Generally Good Results
88CET Dude, Amazon
27 June 2014
Summary: This lens, being fully manual, takes considerable effort to use. The exposure meter (the light-meter quasi-needle in the viewfinder) doesn't often seem to give a reliable indication of exposure, so I generally do a lot of manual bracketing, and then viewing the photos on-screen to make sure at least...
Summary: Fantastic fish eye for little money. Very easy to focus on my Nikon D800 -set in DX mode . Even though there is a crop the lens gives yo a very wide field perfect for creative work. The optics are sharp and the lens is a pleasure to use.