bokeh

I'm considering purchasing an external lens kit for my iPhone to help improve the quality of my pictures and video, but first I'd like to get your opinion. Are they useful? Do they make big different in terms of quality? Can you get nice bokeh with them? Stuff like that.

When Apple launched the iPhone 7 on September 7 it announced a new feature for the iPhone 7 Plus dual-camera system, a “Portrait” mode that enables you to take photos that maintains the sharpness of faces in the foreground against a blurred background effect. The dual-camera system uses both...