The release notes for Canon EOS 7D firmware v1.2.1 describe three changes relating to the live view, movie, and program shift functionality, plus one correction of a typo in the French-language menu system. Both the Live View and Movie modes of the Canon 7D can cause the camera's sensor temperature to be raised, which results in a warning indicator, followed by camera shutdown when a certain threshold is reached. The timing of both the warning indicator and shutdown functions has been tweaked. An issue with magenta-colored vertical banding in still images captured using Manual exposure and expanded ISO sensitivity from the camera's Movie mode has also been corrected. This issue was apparently introduced in the previous v1.2.0 firmware release. Finally, EOS 7D v1.2.1 changes the functioning of the camera's Program Shift function when using Auto ISO sensitivity.

More details, including the firmware download and instructions for its application can be found on the Canon global website, as well as on the website of Canon USA Inc.

Announced in September 2009, the Canon 7D is the first in a new model line for the company's EOS series, positioned alongside the existing EOS 5D Mark II and above the EOS 50D. The EOS 7D offers an effective resolution of 18 megapixels from an APS-C sized CMOS image sensor, eight frames-per-second burst shooting, a maximum sensitivity of ISO 6,400 equivalent (expandable to ISO 12,800), and a Full HD movie capture mode. The Canon EOS 7D began shipping in September 2009, with pricing set at about $1,700 body-only. For more details, read our hands-on Canon EOS 7D preview.