Canon has issued a service notice for the EOS 5D Mark II and EOS 7D offering a paid-for option to replace the cameras' mode dial with a redesiged lockable version. Similar to the one seen the company's latest EOS 60D DSLR, the mode dial features a centre button which has to be pressed to allow a change of exposure mode. This option will be available from December 6 and for a cost of $110 in the US. The European service charge is to be confirmed.
Click here to read the service notice (Canon USA site)
Click here to read the service notice for 5D Mark II (Canon UK site)
Click here to read the service notice for EOS 7D (Canon UK site)