i love this lens using it for video but couple of time try to shoot some pic also very sharp to i really recommending this lens for photographer and videographers who shooting with no full frame cameras

I have used this fisheye lens to shoot several events and wedding receptions. It does a great job helping capture very wide angled shots of entire Churches and reception halls. People standing to my far right can easily be captured in the shot due to the 180 degree angled lens.

This AF circular fisheye is very sturdy and well built lens; It gives a stunning 180 degree sngled view for stunning artistic shots

None to date except from time to time the autofocus ring can move easily during hand placement

Fisheye is always tough to handle: the dynamic range of 180 degrees FOV is simply too wide; either the sun or your feet tend to get into the frame, one must take care finding a good spot -- and this lens is no exception.But for those who are familiar with the specifics of fisheye photography, will...

Consistent Output; Durable; Easily Interchangeable; Lightweight; Quick Focus; Rugged; Sharp Focus; Strong Construction

Chromatic aberration

This lens is STURDY; Very high quality optics; Crisp, clear, and wide every time :D

Price :

Real Fun-lens - funky-punky.... optically very strong, sharp, complete circle (not that bullshitcercle from Peleng 8) nearly without flare (forget the cheepo-Pelengo....!). Very good construction, but take care of the frontlens....

Fantastic perspective - 360 = FUN - sharp; nice buildings; very few CA?′s; NO FLARE

take care on the frontlens

Love this Lens! I bought this lens for Google Street View photography, and it works like a charm. It takes no time to focus, and gets 4 Inches to Infinity in perfect focus. Being a fisheye lens, it can be used very creatively, though it's main purpose I presume is to create Virtual Media like...

Sigma's super multi-layer coating and Special Low Dispersion (SLD) glass provide excellent image quality for digital and film SLR cameras. The special fisheye design allows maximum creative expression.

The Sigma 8mm f/3.5 is a very well constructed lens. accidentally, it drop 2 times out of my camera bag from 50cm on a wooden floor and continues to work great.Being a circular fisheye, it shows vignetting on a cropped sensor camera and a full circular image on full frame sensors.

Very wide angle