There are marks i and ii of this lens and there is a huge difference in performance, different design for the ii made a much better lens. If id does not say mark ii on your lens then a larger lens circle on the back of the lens gives it away, the mark i is quite small.

I took the right decision after reading the positive review with NX500. This is a great lens, perfect with my 28 mp Samsung NX1 with no magenta vignetting. It is true that the lens produces purple fringes with my two 20 mp cameras, NX2000 and NX300. The lens is very sharp and I am keeping the aperture at f/8 for most of the time. I attached some screenshots of images taken with this lens!

This is a top lens for the price - no magenta vignetting or anything for the NX500. Build quality is great pictures are crisp. The fish-eye effect is not as pronounced as seen on some ultrawide lenses and can easily be corrected using postprocessing software without too much loss, producing rectilinear pictures with a much wider field of view than any rectilinear lens available for the NX-series.

A top buy if you are looking for an ultra-wide FOV for the Samsung NX500.

This is a top lens for the price - no magenta vignetting or anything for the NX500. Build quality is great pictures are crisp. The fish-eye effect is not as pronounced as seen on some ultrawide lenses and can easily be corrected using postprocessing software without too much loss, producing rectilinear pictures with a much wider field of view than any rectilinear lens available for the NX-series.A top buy if you are looking for an ultra-wide FOV for the Samsung NX500.

very easy to use and some great effects. play with the lens, it doesn't really matter about focal length with it being a fisheye, just use it for fun.

Just bought this for my Sony A6000, the pictures it produces are fantastic, from f2.8 upwards it's all good. The lens is well made and fits perfectly. You can also set your camera to auto with iso set to auto to make things easier. Use focus peeking to see what's in focus, there are no downsides for the price.

Good Value, and manual focus is no problem at this focal length most of the world is in focus and Sony focus peaking is the best if your camera has it.

Sharper than my leica tri-elmar and carl zeiss 85mm zf. Need to say more? Well, tuck ur finger away, because it covers almost 180 degree. A lens that i dont mind use f2.8 all day long... no idea how they made it so well....

Only took this lens on the last trip I went on and it performed above expectations. Really worth the cost.

Very sharp and accurate. A beautiful lens. I used it for about a year and think this is the best fish eye lens around.

The lens is exactly what I expected and in the short time I have had it fully lives up to its description. It is easy to use, produces sharp images and is light to carry.

For the money it is an exceptional bit of kit

The lens is exactly what I expected and in the short time I have had it fully lives up to its description. It is easy to use, produces sharp images and is light to carry.For the money it is an exceptional bit of kit

Advantages: Reviews I've read on the internet are actually true: huge depth of field allows manual focusing just by distance to the object (I don't use the screen). Image is very sharp (it's my first fish-eye lens, maybe better sharpness is common for them?), no chromatic aberrations (compared to Sony 35F18). Soft case is included. Disadvantages: Haven't found. So I am very happy of this purchase!

This is a nicely made lens which feels good on the camera. It's fully manual, but this isn't really a problem - set it to f/8 and 3 metres, put the camera on aperture priority and forget it. Results are sharp and the fisheye effect is interesting, though not overwhelming. If you're willing to do some post-processing on the computer, there's a Photoshop/Aperture plug-in called "Fisheye Hemi" which will remove the fisheye effect and make the image rectilinear and will make the lens act as as a super ultrawide angle: just imagine an 8mm wide angle on APS-C!

The real problem with this lens, which has been noted by others, is that whilst it works well on almost all NEXs, with the NEX-7, it gives a very pronounced purple-magenta cast in the corners. If you shoot only JPGs, this will make the lens unusable, but if you shoot RAW and are prepared to put in the post processing work, it can be largely removed using a package called "Cornerfix".

In summary then, great for all NEXs except the 7 - unless you shoot RAW and are willing to do quite extensive post-processing, in which case it's usable.

This is a nicely made lens which feels good on the camera. It's fully manual, but this isn't really a problem - set it to f/8 and 3 metres, put the camera on aperture priority and forget it. Results are sharp and the fisheye effect is interesting, though not overwhelming. If you're willing to do some post-processing on the computer, there's a Photoshop/Aperture plug-in called "Fisheye Hemi" which will remove the fisheye effect and make the image rectilinear and will make the lens act as as a super ultrawide angle: just imagine an 8mm wide angle on APS-C!The real problem with this lens, which has been noted by others, is that whilst it works well on almost all NEXs, with the NEX-7, it gives a very pronounced purple-magenta cast in the corners. If you shoot only JPGs, this will make the lens unusable, but if you shoot RAW and are prepared to put in the post processing work, it can be largely removed using a package called "Cornerfix".In summary then, great for all NEXs except the 7 - unless you shoot RAW and are willing to do quite extensive post-processing, in which case it's usable.