There used to be an exciting anticipation with pre-digital photography: You hit the shutter button, then waited hours or days to see how the film came out. Digital photography has wiped that out with screens delivering instant gratification.
However, some photographers that shoot digital, like Xavi Bou, still have to wait to see what they captured. Bou uses the technique of chronophotography, in which dozens of shots are layered in postproduction, to produce his "Ornitographies" series capturing the flights of birds. The results are pretty stunning: