Application calculates exposure parameters - Iso, Aperture or Shutter speed according to known values and light intensity. Light sensor in device is necessary for calculation. Easy of use. Photo. Utilities. Calculator. Light meter. Android. Application calculates exposure parameters - Iso, Aperture or Shutter speed according to known values and light intensity. Light sensor in device is necessary for calculation. Easy of use. Photo. Utilities. Calculator. Light meter. Android.