Brightness matching and flicker photometric data obtained over the full mesopic range.

@article{Vinot1992BrightnessMA,
  title={Brightness matching and flicker photometric data obtained over the full mesopic range.},
  author={Françoise Vi{\'e}not and Alain Chiron},
  journal={Vision research},
  year={1992},
  volume={32 3},
  pages={533-40}
}
Three normal observers made visual matches from 0.03 to 100 td on a 10 degree central field at 445, 560 and 630 nm, using two different methods: heterochromatic flicker photometry and direct comparison brightness matching. In a relative sensitivity vs illuminance plot, the brightness matches underwent smooth changes, while the flicker curve exhibited a step-like transition around 1 td, between two separate branches. A reverse Purkinje shift was found on the high mesopic branch at 630 nm… CONTINUE READING

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