flocking
n.— «Many Holga owners overcome this by taping up the gaps, or even spraypainting the camera’s shiny interior matt black to minimise internal reflection—a process called “flocking.” Others incorporate the light leaks into their work.» —“The cult of Holga: The sixties’ camera makes a comeback” by Simon Usborne Independent (United Kingdom) Mar. 18, 2008. (source: Double-Tongued Dictionary)