Note: This article is part of a series of interviews with the experts behind vivo’s X series. For more, take a look inside the optics expertise behind a smartphone born for photography. If you ask An ...

I really want an 85mm f/1.4 AF lens. I can't afford an 85mm f/1.4 AF lens, but I can afford a MF one. I want to use it for concert photography, which I've recently got hooked on (I'm currently using a ...

In photography, depth of field refers to how much of a three-dimensional space the camera can focus on at once. A shallow depth of field, for example, would keep the subject sharp but blur out much of ...