a camera shutter having a group of overlapping blades that open and close at the center when exposing film. Also called between-the-lens shutter, diaphragm shutter, iris diaphragm shutter .
IRIS SHUTTER
Meaning of IRIS SHUTTER in English
Random House Webster's Unabridged English dictionary. Полный английский словарь Вебстер - Random House . 2012