Samyang 10mm F2.8 ED AS NCS CS Ultra Wide Angle Lens for Nikon Digital SLR Cameras with AE Chip Auto Metering (SY10MAF N), Black

Nano Crystal Coating System (NCS) for increased light transmission and reduced internal reflections Fast F2.8 maximum Aperture + close-focusing to 9.5 inches = maximum versatility in all shooting conditions Optimized for excellent optical quality and true ultra-wide 110 degree edge to edge coverage with 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