How to set the pre-elevation angle of the mirror in Canon 5d2 depends on the specific operation process.

Menu-penultimate-C.Fn3: autofocus/drive-upper right corner 6- reflector pre-lift -0. Close 1. Here we go. That's it. However, it should be noted that after pre-lifting, the mirror cannot directly face the sun, otherwise the sensor may be burnt out.

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Benefits of mirror pre-lifting:

"Pre-lifting of reflector" has strong practicability. When shooting under certain conditions, it can ensure the image clarity and effectively improve the image quality. Professional photographers are used to using the "reflector pre-lift" function when shooting advertisements, still life and scenery.

Digital SLR cameras used by ordinary photographers press the shutter twice to complete reverse photography, and press the shutter twice to complete "mirror pre-lift" and exposure.

After selecting "reflector pre-lift", press the shutter for the first time, the camera will pre-lift the reflector, and then press the shutter for the second time before the official exposure.

Usually, when choosing the slow door to shoot scenery, still life and macro photography, the influence of mirror vibration of SLR camera is far greater than that of shutter vibration, so it is suggested to use "mirror pre-lift" as much as possible when shooting subjects with special emphasis on definition.

Specifically, when using a low-speed shutter, for example, 1/8 seconds, 1/4 seconds is less. 1/2 seconds or more? When exposing 1 sec, first hold the camera with a tripod, polish and focus, then pre-lift the reflector, pause for a few seconds, and then officially open the shutter for exposure.

This can avoid the vibration caused by the reflector and ensure the camera to complete the exposure in an absolutely stable state, which is of great significance for improving the image definition and giving full play to the advantages of the lens.