Kenko-Tokina will exhibit a mockup of a 70-200mm F4 telephoto zoom that features both a ring-type ultrasonic autofocus motor and optical image stabilization at the CP+ trade show in Japan. Kenko-Tokina will exhibit a mockup of a 70-200mm F4 telephoto zoom that features both a ring-type ultrasonic autofocus motor and optical image stabilization at the CP+ trade show in Japan.