SP 90mm F/2.8 Di MACRO 1:1 VC USD (CANON EF) firmware v3

This update improves the following issues on the Canon EOS 5D Mark IV:1. The behavior when the camera is initially turned on with the lens mounted and takes several seconds to turn on.2. The behavior where power consumption was high with the lens mounted and the camera's battery would continue to drain even when the camera was switched off and stowed with the lenses mounted.Updated Serial Number: 009458 or later