Light painting, or taking a few RGB LEDs, a camera with a long exposure, and turning the world into Tron, has been around for a while. We haven’t seen many people using their household CNC ...

Paint 3D excels at image resizing and cropping tasks. In addition to resizing, Paint 3D offers simple and easy-to-use photo editing tools, as well as a straightforward image overlay tool.

This story appears in the June 2017 issue of National Geographic magazine. To appreciate a painting, we’re taught to look for color, composition, and light. But how can a painting be savored by ...