My biggest surprise with the Fairphone 6 was its presence of a 3D time-of-flight sensor on the back, in lieu of a third sensor. These were popular on phones a few years ago but largely as a way of bulking up a specs list, and rarely did they actually contribute much. But on the Fairphone 6, the impact is noticeable as portrait photos have incredibly accurate background blur, getting blurrier with greater distance from the subject.
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