In 1981, rock 'n' roll photographer Lynn Goldsmith, who has worked with Michael Jackson, Bob Dylan, the Beatles and many others, stepped into her studio with the artist then known as Prince, put some purple eyeshadow and lip gloss on him to "accentuate his sensuality," and began shooting pictures with her Nikon 35mm camera.
Three years later, Vanity Fair licensed one of the black-and-white photos from Goldsmith for $400 and hired Andy Warhol to create an illustration from it for one-time use in the November 1984 issue of the magazine. Warhol did his artistic magic with the photo and Vanity Fair ran it. Goldsmith received a small credit as the photographer.
While he was at it, though, Warhol created a series of 15 other illustrated portraits from the photo, mostly silkscreen images (like the ones he'd previously made of Jackie Kennedy and Marilyn Monroe), which have subsequently been sold, licensed and displayed as Warhol's own work. For these, Goldsmith got no credit or fee, even though her photo was the basis for the portraits.