Theia Technologies
C Mount ML183M Model
The C mount ML183M model – the C mount version of the SL183 ultra wide undistorted varifocal lens – is designed for 1/3” (6.0mm) to 1/ 2.5” (7.2mm) image sensors with resolution up to five megapixels and will provide from 77 to 115 degrees horizontal field of view, with less than one percent barrel distortion. Theia’s Linear Optical Technology optically corrects the barrel or fisheye distortion typical of other wide lenses keeping straight lines straight without the use of software.
http://www.theiatech.com/