Updated language displayed in the menu to improve readability.

Adds support for AF and release during zoom operations for some RF and EF lenses.

Adds the setting to the menu that will brighten and dim based on ambient light conditions.

This will improve the visibility of moving subjects in live view and in the viewfinder. *During continuous shooting black frames will be inserted between frames in the viewfinder and live view.

When using high-speed or low-speed continuous shooting modes, in Drive Mode with, the visibility of the subject within the frame has been improved when shooting moving objects.*.

Corrects a vulnerability related to firmware update.

Corrects a PTP communications vulnerability.

Fixed a vulnerability related to firmware update.Secured a PTP communications vulnerability.Network connection reliability improved for certain network environments including connecting to a 5GHz network while the SSID is hidden.The EOS 1DX II will connect more reliably via ethernet to a mobile wifi hotspot.Fixes the phenomenon that may result in the occurrence of time-out under certain conditions during FTP transfer.Improves compatibility of HEIF images recorded in the camera with MIAF (Multi-Image Application Format) standards.Enables manual flash output (excluding high-speed sync and optical transmission wireless flash shooting) to be selected and set up to 1/8192 from the camera menu screen when the Speedlite EL-1 flash is attached to the camera.Enables 2nd curtain shooting sync during radio transmission wireless flash shooting when the Speedlite EL-1 flash is attached to the camera.

Canon 7d firmware adjustment