Irix 11Mm F4.0 Blackstone Lens Wbuilt-In Ae Chip For PentaxOur 11mm lens is an extremely wide Full Frame rectilinear lens with a 126A angle of view. 4 high refractive lenses, 2 ED lenses and 3 aspherical lenses guarantee minimal distortion, as low as 3.13%, making our 11mm f4.0 lens absolutely unique in its class. Our Firefly lens offers the same o..