包围曝光是在技术上帮助摄影师获得正确曝光的图像。
Exposure bracketing is a technique used by photographers to help ensure they capture a correctly exposed imaged.
如果你是刚开始水下摄影，包围曝光将帮助你获得正确的相片。
If you are just getting started in underwater photography, bracketing can help you get the right shot.
这种情况下，依靠包围曝光来调整外闪要比调整相机设定的可能性更大。
In this case, you may want to bracket the exposure by adjusting your strobe power rather than with your camera Settings.
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