iPhone X’s Telephoto Lens Is Substantially Better Than That of the iPhone 7 Plus<img style="float: left; margin-right: 10px"  src="

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A head-to-head comparison between the telephoto lens of the iPhone 7 and iPhone X shows that the latter’s telephoto lens is vastly superior in low-light scenarios. When Apple launched the iPhone 7 Plus in 2016, it mentioned that the phone would not switch to the secondary telephoto lens in extremely low-light scenarios and instead output an image from the primary camera only.   
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iPhone X’s Telephoto Lens Is Substantially Better Than That of the iPhone 7 Plus