Canon EOS Rebel T4i Instruction Manual - Page 140

Mirror Lockup to Reduce Camera ShakeN 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. Mirror lockup is enabled by setting [5: Mirror lockup] to [1: Enable] in the [54: Custom Functions (C.Fn)] (p.296). 1 Focus the subject, then press the shutter button completely. X The mirror will swing up. 2 Press the shutter button completely again. X The picture is taken and the mirror goes back down. After taking the picture, set [5: Mirror lockup] to [0: Disable]. Shooting Tips Using the self-timer , with mirror lockup When you press the shutter button completely, the mirror locks up, then the picture is taken 10 sec. or 2 sec. later. Remote control shooting Since you do not touch the camera when the picture is taken, remote control shooting together with mirror lockup can further prevent camera shake (p.303). With Remote Controller RC-6 (sold separately) set to a 2-sec. delay, press the transmit button and the mirror will lockup before the picture is taken 2 sec. later. 140