After successful launches of an 85 mm f/1.4 model and an 8 mm f/3.5 fisheye, in September 2009 the Samyang company launched worldwide the next lens. It was a Samyang 14 mm f/2.8 IF ED MC Aspherical – an ultra wide angle prime lens designed to work on full frame cameras.
high and complicated distortion; significant vignetting on full frame; you can't use any filters