● It has improved the AF performance when used in combination with the SIGMA MOUNT CONVERTER MC-21 SA-L.
● It has improved the start-up time after the Nikon D6 power is turned on.
● It has fixed an issue where the autofocus did not work when used on a Nikon D6.
● It has optimized the exposure during viewfinder shooting when used in combination with the EOS 90D and the EOS-1D X Mark III.
● It has corrected the phenomenon whereby the continuous shooting speed decreases in certain combinations with some cameras.