An anti-halation layer is the light absorbing layer in raw stock that prevents reflection of light back into the light-sensitive emulsion. ... This prevents unwanted fogging. The base may be dyed gray.

What does a Halation mean?

1 : the spreading of light beyond its proper boundaries in a developed photographic image. 2 : a bright ring that sometimes surrounds a bright object on a television screen.

What does Anna Halation mean?

noun. the process of treating a film base with a light-absorbing substance to prevent refraction of light from the rear of the film. adjective. resistant to halation.