Source: Mucha Foundation
Thanks to the myth of the artistic genius, we may reflexively want to see it as "cheating" when an artist doesn't pull every detail from their imagination. Before photography, artists used camera obscuras to help get their vision from mind to canvas. But since the handy dandy ease invention of the camera, photography and video have been useful tools in other artistic mediums.
Source: Lens Culture
Source: Sweet Valley High Podcast