Can anyone explain this:
5D mk3 - with just a CF card inserted when I press AF point selection button (next to star button) - nothing happens.
With just SD card inserted press AF point selection button and points are displayed as they should be.
With both caards inserted AF points flash onto screen for a few seconds as camera is switched on.
This is a new CF card - I only have one so not able to check with another card. Seems to record photos OK. Brought from Amazon.
Look forward to your thoughts.
