Autofocus is a feature of modern cameras that’s easy to take for granted. But have you ever stopped to ask yourself how it works? Focusing a manual lens can be a painstaking and frustrating process, especially for amateurs — so how does your smartphone do it so easily? It turns out that that there are actually several technologies that are used to achieve an autofocus effect. Let’s start by explaining what focus is, and then how the computer in your phone can manipulate it to get a sharp image. How Focus Works The lens in your smartphone camera serves the same purpose as...
Read the full article: How Does Autofocus Actually Work?
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