sensitometer

A measuring instrument used to determine the light sensitivity of photographic film across a range of exposures.

• 🇨🇳感光计是一种用于测定感光材料（如胶片、相纸）感光度的测量仪器，通过一系列曝光并测量所得密度来确定其感光性能。

1. Light sensitivity measurement device C2 formal technical

   An instrument used to measure the sensitivity of photographic film or other light-sensitive materials to light over a range of exposures.

   • The technician used a sensitometer to calibrate the film's ISO rating.
   • Modern sensitometers can test digital sensors as well as traditional film.
   • The results from the sensitometer showed the film had excellent low-light performance.

   🇨🇳感光计

• sensitometers plural form
• sensitometers' possessive plural form
• sensitometer's possessive singular form