As Petur says.The LEDs wouldn't give enough light for photography, so they are "overpowered" so to speak. More than enough power is supplied in an effort to get them flood the scene enough. But because this power is only a very short burst (milliseconds) if that, there isn't enough heat generated to burn them out. Supply that amount of power constantly over a prolonged lengh of time and it could potentially damage the LCD filaments. Just something that I learned during an electronics course.