photometer

• Научный прибор, используемый для измерения интенсивности света, либо путем сравнения источника света с эталоном, либо для измерения уровня освещенности в фотографических целях.

A scientific instrument used to measure the intensity of light, either by comparing a light source to a standard or by measuring light levels for photographic purposes.

1. Luminous intensity meterC1formalscientific

   An instrument used to measure the brightness or luminous intensity of a light source by comparing it to a standard source, either visually or photoelectrically.

   Фотометр

   • The scientist used a photometer to measure the output of the new LED bulb.
   • A visual photometer compares two light sources side by side.
   • Photoelectric photometers provide more accurate readings than older models.

2. Photographic light meterB2formaltechnical

   A device used in photography to measure the intensity of light, helping to determine the correct exposure settings.

   Фотографический экспонометр

   • The photographer adjusted the aperture based on the photometer reading.
   • A built-in photometer in the camera helps set the shutter speed.
   • He used a handheld photometer to measure the light in the studio.

   Синонимыexposure meterlight meter