24-35mm F2 DG HSM | Art (Canon EF mount) firmware v2.01

It has optimized exposure during viewfinder shooting when used in combination with Canon EOS 90D and EOS-1D X Mark III.It has fixed a rarely-occurring communication problem during Live View shooting when mounted on the EOS-1D X Mark III.It has reduced the operating sound of the lens diaphragm blades when attached with the SIGMA MOUNT CONVERTER MC-11 EF-E and used for shooting movies.It has reduced the operating sound of the lens diaphragm blades when used for shooting movies on Canon cameras. * * The degree of improvement differs depending on the camera used.