Night mode turns on automatically in low light, so your photos always look their best. If you want to manually adjust the exposure time, just tap the Night mode button in the Camera app on your iPhone 11 or iPhone 11 Pro.
To learn more about this topic visit the following article:
iPhone 11 and iPhone 11 Pro camera features: https://apple.co/2SI2nsL
Take and edit photos with your iPhone, iPad, and iPod touch: https://apple.co/2OORu7r
Use Portrait mode on your iPhone: https://apple.co/2tR4aTQ
Additional Resources:
Contact Apple Support for iPhone: http://apple.co/iPhone
To subscribe to this channel: https://www.youtube.com/c/AppleSupport
To download the Apple Support app: http://apple.co/2hFtzIv
Apple Support on Twitter: https://twitter.com/AppleSupport
For more videos, go to Youtube Apple Channel