Tokina 400mm F5.6 AT-X 400 AF SD Specifications
Diagonal Angle of View:
Number of Aperture Blades:
Focus Clutch, rear focus
The lens features a built-in tripod collar, the focus ring rotates during AF operations. The AT-X 400 SD is a very cheap lens with a solid build, good color rendition and bokeh, but reportedly soft even stopped down with a tendency for heavy chromatic abberations.