Rokinon 10mm F2.8 ED AS NCS CS Ultra Wide Angle Lens Canon EF S Type for Digital SLR Cameras (10M C), Black

Nano Crystal coating system (n's) for increased light transmission and reduced internal Reflections Maximum diameter: 3. 43 inches (87mm). fast F28 maximum aperture + close-focusing to 95 inches = maximum versatility in all shooting conditions Optimized for excellent optical quality and true ultra-wide 106 Degree edge to edge coverage with Canon APS-C sensor digital cameras Utilizes 3 high precision (2 aspherical + 1 ED) Lens elements for superior image quality Inner focusing system (if) – length doesn't change and front element does not rotate – keeps integrated petal-type lens hood properly oriented