NOTE Icons used on this page: <  >: Set-up tab 4/<  ><  >: Cross keys/<  >: Setting button
Checking the [Mirror lockup] setting During viewfinder shooting, if the shutter does not release when the shutter button is pressed fully, check the [C.Fn III: Autofocus/Drive - 5: Mirror lockup] setting in [Custom Functions (C.Fn)] from the menu on the LCD. If the setting is set to [1:Enable], change it to [0:Disable] to disable the mirror lockup. NOTE If the Mirror lockup is set, the mirror swings up when the shutter button is pressed fully, and the viewfinder is blacked out. When the shutter button is pressed fully again, the mirror goes down and the picture is taken. The camera's mechanical shake caused by the reflex mirror action can blur images taken with a super telephoto lens or close-up (macro) lens. In such cases, mirror lockup is effective. For details about mirror lockup, refer to the instruction manual that came with your camera.
Disabling the [Mirror lockup] setting To disable the Mirror lockup setting, follow the steps below. 1. Set the power switch to <ON>. 2. Press the <MENU> button.  3. Press the < > key to select [Custom Functions (C.Fn)] under the [  ], then press < >.  4. Press the < > key to select [C.Fn III: Autofocus/Drive - 5: Mirror lockup], then press < >.  5. If [1:Enable] is selected, select [0:Disable], and then press the < >.  6. To exit and return to the menu, press the <MENU> button.
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