Locking the flash exposure

You might never notice it, but when you press the shutter button to take a picture with flash enabled, the camera emits a very brief preflash before the actual flash. This preflash is used to determine the proper flash power needed to expose the image.

On occasion, the information that the camera collects from the preflash can be off-target because of the assumptions the system makes about what area of the frame is likely to contain your subject. To address this problem, your camera has a feature called flash exposure lock, or FE Lock. This tool enables you to set the flash power based only on the center of the frame.

Follow these steps to try it out:

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