Certified Professional Photographer (CPP) Practice Exam

What is the purpose of a parabolic reflector in lighting?

1. To diffuse the light

2. To create shadows

3. To focus the light forward

4. To enhance color saturation

The correct answer is: To focus the light forward

The purpose of a parabolic reflector in lighting is to focus light forward, which can significantly enhance the control and direction of the emitted light. Parabolic reflectors are designed with a specific shape that allows rays of light emitted from a point source located at the focal point of the reflector to be redirected into parallel beams. This feature makes them particularly effective for applications requiring concentrated lighting, such as in photography or stage lighting, where precise illumination is essential. The unique geometry of a parabolic reflector ensures minimal light loss and maximizes the intensity of the focused light beam, making it highly beneficial for achieving desired lighting effects in a variety of settings. The focused nature of the light helps in creating dramatic highlights and effectively illuminating subjects without excessive spill light, which is valuable in professional photography.