This lens is very sharp and I have been using the lens on the Canon M5 at ƒ5.6 manually pre-focused. The weather has been pretty bad for most of the time I've had it, so I'm not as practiced with it as I hoped I would be at this point.

This review refers to the version II lens for the Canon mount. The lens is sharp wide open from center to corners which is simply amazing. Stereo graphic projection allows to produce very nice images which look great (if you are careful) even without defishing.

All good, and exactly what i want!

This thing is a lot of fun, almost a 180 fisheye on a cropped sensor.

The very nature of a fish-eye lens makes it a bit of a specialist tool, and so this lens may have limited use for most people. I have not tested it extensively but it seems to generally give images at least as sharp as my Fuji lenses. So very pleased with it especially at the price.

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  Consistent Output, Easily Interchangeable, Lightweight, Strong Construction

I was recommended this lens for my Fuji X T1 by a professional photographer and it is fun to use. This fish eye lens is an interesting addition to the lenses which can be used with this camera and I have enjoyed trying it out at home, in buildings and in the street.

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  Durable, Easily Interchangeable, Fun To Use, Lightweight, Quick Focus, Sharp Focus

VERY good fisheye will not dissappoint

Great lens very easy to use! Takes great photos! I use a fujifilm xe-1

easy to use. No need to fiddle with manual focusing, almost everything is sharp at 3.5 and good enough at 2.8, lovely pictures for a fun fisheye effect at a low cost.

Excellent little lens works very well