> Plus, LEDs don't have anything like a blackbody spectrum like a heated filaments What is the physiological mechanism you suspect makes this matter? I don't

> Plus, LEDs don't have anything like a blackbody spectrum like a heated filaments What is the physiological mechanism you suspect makes this matter? I don't see any real way an LED which is metameric with sunlight would be able to make a difference (except possibly for people with some form of color blindness - who could possibly have different metamer "groups")