It’s been almost 200 years since the oldest surviving photograph was taken: The exact date isn't known, but this was taken sometime during 1826.This isn’t a description of reality, like a painting or a sculpture. This is a piece of reality caught in a trap and pinned up for viewing – even two centuries later. To take our own pictures, we’ll need a light sensitive material: I recommend using silver chloride or iron citrate because they are relatively forgiving and don’t require any s...