What is Chromatic Aberration Compensation (CAC) and what does it do?
Chromatic aberration correction (CAC) can correct chromatic aberrations (color fringing) introduced by the lens optics. Chromatic aberrations are caused when the red, green and blue images do not match up exactly at all points in the image. A camera/lens pair, capable of CAC operation can introduce appropriate offsets to better match red, green and blue images, thus reducing or eliminating any color fringing. Chromatic aberrations are normally only observed at the extreme positions of focus and zoom, with the iris wide open. CAC will only work when both the camera and lens support the feature. The camera needs to have an offset look-up table stored in memory, and the lens and camera must be able to communicate for CAC to operate properly. The AG-HPX500 and AJ-HPX3000 support CAC, using compatible Canon and Fujinon EFP-style zoom lenses. As more affordable HD lenses have been designed, CAC has been helpful in reducing chromatic aberrations, which tends to be the most objectionable poten
