I am trying to change the focus mode. Right now, only a red bracket is visible and nothing is fully in focus. I have both the lense and the body on auto focus. When i hold down the button on the body and try to use the dial to switch the mode, no options show up on the LCD screen or in the view finder. I need to change it to AF Continuous. This is very frustrating because I am following the instructions in the manual and online tutorials on how to change the focus, and I see nothing. Please help me! Thank you in advanced!