The other camera lens is a 100x optical telephoto camera module that requires a Wi-Fi connection to the phone. Doing so transmits the images from the camera to the phone's viewfinder. When I tested it on the show floor, there was a decent amount of lag. That might have been because inadequate Wi-Fi signals on the show floor -- or it could be a poor implementation. It's hard to tell.
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human perceptual system fails to register stimuli. Perception fails when humans，更多细节参见体育直播
Gunners manager wants even more goals from dead balls