@nitinkhanna Specifically:
Be ready when your photo op turns into a video op.
Say you’re taking photos and you see something you’ve got to catch on video. With QuickTake, there’s no need to switch modes. Just leave your finger on the shutter to start recording. Want to keep the recording going? Swipe right. To take burst photos, swipe left.
way down in https://www.apple.com/iphone-11-pro/