Glossary: Foot Lamberts

A measurement of reflected light off a surface. To work out foot lamberts, take the light output of your projector and divide by your screen size measured in square feet then multiply by the screen gain.

In a well set up home cinema room, with no ambient light an reflectance of 12-22 foot lamberts is ideal, however in most home cinema rooms which double up as the family sitting room a higher output will be required as it is difficult to achieve complete darkness. In this situation aim for around 30 foot lamberts which will be fine for watching films in relative darkness.

• Field
• Film Artefacts
• Fixed Pixel Display
• Flicker Fusion Threshold
• Focus
• Frame
• Frame Rate
• F-stops

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