Note: This is likely a gray market item and, therefore, won’t include a US warranty card. At the time of this post, ebay seller RedTagCamera has a positive feedback rating of 99.9%.
Canon has issued a firmware update for the EOS 1D X. Firmware version 2.0.8 provides the following fix:
- Fixes a phenomenon which occurs when the “Shutter button half-press” menu item, configured in “C.Fn5: Operation” > “Custom Controls Menu”, is set to metering start only; depending on when the shutter button is half-pressed, it may initiate AutoFocus.
You can download the firmware update here on Canon’s website.