Light Intensity Measurement

How to measure light intensity using a light meter.

Light intensity measurement.

Photography studio the main reasons for measuring light intensity are to ensure that minimum standards of illumination are being met and to determine appropriate exposure times in photography and cinematography. Four commonly encountered situations are set out below. Four commonly encountered situations are set out below. Photometry is the science of the measurement of light intensity where light refers to the total integrated range of radiation to which the eye is sensitive.

Ergonomics and safety minimum illumination levels are recommended for many environments. In photometry luminous intensity is a measure of the wavelength weighted power emitted by a light source in a particular direction per unit solid angle based on the luminosity function a standardized model of the sensitivity of the human eye the si unit of luminous intensity is the candela cd an si base unit. Measure ambient light in the room. Photography studio the main reasons for measuring light intensity are to ensure that minimum standards of illumination are being met and to determine appropriate exposure times in photography and cinematography.

Hold the photometer in the area that you want to measure the intensity of the light. Photometry is distinguished from radiometry in which each separate wavelength in the electromagnetic spectrum is detected and measured including the ultraviolet and infrared photometry. Using a light lux meter is the best way to measure light intensity it gives us the ability to choose the optimal light intensity for an environment. To measure light intensity use a handheld digital photometer or download an app on your smartphone.

Ergonomics and safety minimum illumination levels are recommended for many environments.