How does one change the AF point using the directional buttons WITHOUT permanently deactivating the functions mapped to the cursor buttons? On a similar note, does one just touch the screen to change the AF point or do you need to press something first? Also wondering why the red card access icon appears on my camera during bootup and shut down. Is this normal? Keep in mind though that I don't own a lens yet but am hoping to add the PL 25 in the near future. Thanks!