因为在最大闪光灯范围外拍摄的照片显得太暗。
Because pictures taken beyond the maximum flash range will be too dark.
如果你需要用闪光灯的话，把两部相机的闪光灯都打开，做好准备拍出的照片可能有点怪。
If you need to use flash, turn on the flashes for both cameras and expect things to come out a little weird.
照片说明：关闭闪光灯，将相机设为手动模式。
Photo Tip: Turn off your flash and set your camera to manual mode.
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