Aperture
1. A small narrow opening.
2. A fixed or adjustable opening in a piece of equipment such as a camera or microscope that lets light pass through a lens or mirror.
3. The diameter of an aperture in a piece of equipment such as a camera.
2. A fixed or adjustable opening in a piece of equipment such as a camera or microscope that lets light pass through a lens or mirror.
3. The diameter of an aperture in a piece of equipment such as a camera.