Summary: The lens is very easy to use. It arrived quickly, I'm not a professional or anything and I'm sure there are benefits to the automatic focus but this is by far the cheapest fisheye I've been able to find and it gets pretty great shots. I would recommend this product to any amateur photographers who don't want to spend $600+ on a lens.
Summary: First impression was, "Man, what a low price for a fisheye!" but was kind of afraid that it might produce sub par images compared to the Canon lenses itself. However, i was amazed how great this lense is. IQ is superb, does what a fisheye does, and it's super wide! However, i'm still not used to the focusing. It might take some time for me to learn it.
Summary: Before giving me negative feedback, the 3 stars is NEUTRAL, not bad. Amazon does not have a neutral rating so I must go into the center of the stars. ✔ Camera I am using the Nikon d7100. Make sure the body of your camera is switched from AF to M, otherwise you might damage your camera. Also, at the top of the camera move the Mode switch to M. ✔Lens This is a manual lens. You physically set the Aperture on the lens (not through the camera's electronics) .
Summary: High quality lens that is really fun to mess around with. I've been using it widely for a project in studio and it produces great photos. It is 8mm and definitely a fisheye so you're going to get distortion around the edges, but nothing that wouldn't be expected coming form a fisheye. Has a nice sturdy build to it, comes with a little soft holder and is now something I always have in my camera bag with me to take photos with.