Fixes a malfunction that in rare occurrence causes a low battery indication to be displayed when using the EF 85mm F1.2L II USM lens.
Depending on the battery check timing of the camera, the battery level displayed on the camera\'s LCD data panel may shows Battery will be exhausted soon or Battery must be recharged, even though the battery capacity is sufficient.
This phenomenon may occur only when using the EF 85mm F1.2L II USM lens in combination with the EOS 40D and does not occur with other cameras and lenses.