exposure meter

English Thesaurus

1. photographic equipment that measures the intensity of light (noun.artifact)

hypernym	:	photographic equipment,
definition	:	equipment used by a photographer (noun.artifact)

hyponym	:	cytophotometer,
definition	:	a photometer that can be used to locate and identify chemical compounds in a cell by measuring the intensity of the light that passes through stained sections of the cytoplasm (noun.artifact)