The Canon 9-540mm XJ60x9BIE-D / LO DIGISUPER 60x Field Lens is a cost-effective lens that can be used for long focal length applications in the field, in large studios, and at special venues. This lens is specifically suited for both HDTV and SDTV live television production applications. It is suitable for use by mobile truck operators and broadcasters whose foremost priority is good telephoto flexibility to achieve high-definition sports and entertainment event coverage while operating within constricted production budgets. The lens can also be used for telephoto shooting in large studios, government organizations (homeland security), and many institutional sectors. The optimized optical design successfully maintains a high MTF profile over the entire image plane when implementing the long 60:1 focal length change. Parallel optimization minimizes chromatic aberrations over this focal range.