Anyone who has taken a picture of themselves knows that there’s a real skill to it. From the lighting to the angles, there’s a true a mastery to capturing one’s own image on camera. “Selfie” wasn’t recognized by Meriam-Webster Dictionary until 2014, but the practice is one that pre-dates the current era inundated by the likes of Kim Kardashian. PBS explores the history of the selfie — one that developed over time — to study innovative camera optics and experimentation. Eventually, it became a true art form, evolving ever since Robert Cornelius took what is arguably the first self-photograph back in 1839, with the likes of Walker Evans, Andy Warhol, Ai Weiwei and other noted photographers using selfies as a means to express. And although there’s an art to taking a good selfie, not every selfie is art. Watch above to learn why.