Night mode is an automatic setting which takes advantage of the new wide-angle camera that's in the iPhone 11 and 11 Pro models. It's equipped with a larger sensor that is able to let in more light, allowing for brighter photos when the light is low.
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Apple Finally Discontinues Shake? [Updated]
Shake was originally launched in 1997 as a product of Nothing Real, which was acquired by Apple in early 2002. Apple continued to update Shake over the next several years, but the release of Shake 4.1 in mid-2006 was accompanied by the announcement that no further software updates were planned. A minor update to version 4.1.1 was issued in late 2008.
At the time of Shake 4.1's release, rumors claimed that Apple's replacement for the software package, code-named "Phenomenon", would be based on Apple's Motion software and released in 2008. While such a standalone product has not surfaced, it is possible that Apple finally views Motion 4 and other components of the updated Final Cut Studio released last week as a sufficient replacement for Shake's features.
Update: Apple's Shake product pages now redirect to the Final Cut Studio main product page.