Kenko Tokina Co.,Ltd. has introduced the AT-X 70-200 F4 PRO FX, medium-telephoto zoom lens with a focal length of 70 mm to 200mm and a maximum aperture of f/4 compatible with the Nikon full frame SLR or Canon full frame SLR.
Three SD glass elements provide excellent correction for color aberration. Ring type ultra-sonic motor ensures fast and quiet auto-focussing as well as full-time manual focussing capability. This lens incorporates an inner focussing and inner zooming system. The 9-blade diaphragm creates an attractive blur to the out of focus areas of the image.