a number indicating the increased exposure that a particular film should receive when a photograph is taken using a particular filter.
What Does 🤐 Zipper-mouth Face Emoji Mean?The zipper-mouth face emoji depicts a face and two eyes, with the mouth appearing as a silver zipper, complete with a dangling zipper pull.
Origin of filter factor
First recorded in 1920–25
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019