Snoots are front-of-the-light tubes that project a circle of light on a subject or background. They also reduce Spill. Tip: To turn the circle into an ellipse, decrease the light-background angle.tiffaneduglossary
A shield fitted to a lamp used to direct a concentrated beam of light onto a scene.
A conical tube that fits over a studio light that gives you more control over the light beam and forms a small circular patch on the subject. Often used as a hair light on portrait photography.