iOS 16 introduces significant improvements to portrait photos and Cinematic mode on the iPhone 13 and iPhone 13 Pro.

Announced at WWDC earlier this year, iOS 16 brings improved quality to video recorded with Cinematic mode, making the depth-of-field effect more accurate for profile angles and around the edges of hair and glasses.
Apple is also bringing the ability to blur objects in the foreground of a photo to iOS 16, producing what Apple calls "a more realistic‑looking depth‑of‑field effect."
The updates to portrait photos and Cinematic mode are only available on the iPhone 13, iPhone 13 Pro, and iPhone 13 Pro Max, according to Apple. It is not clear if the omission of the iPhone 13 mini is an error or an intentional exclusion.
Cinematic mode was one of the key features Apple touted when it unveiled the iPhone 13 lineup last year, but Portrait mode has been available on almost all iPhone models since the launch of the iPhone 7 Plus in 2016, so it is not clear why only the latest models benefit from the Portrait mode software improvements.
Apple's iPhone 14 and iPhone 14 Pro models also support these improvements alongside a range of other camera upgrades. Apple analyst Ming-Chi Kuo previously said that he believes that the camera quality of the iPhone 14 Pro models elevates "mobile phone camera photography to a new level."