and yes there's also a reflection of the webcam on the mylar. mylar may look dark but it reflects much more light and heres why..........
in flat white paint the reason it gets so bright when light hits it is the atoms are exited more and converts some of that light energy into heat and thats where that other 15% dissapeared to. mylar just reflects without exiting the atoms
harmonicminor Reviewed by harmonicminor on . side lighting and Mylar Hey Zandor In the faq section you are right about the reflectivity of mylar being better than white paint but....... yes a 1000 watt hps lamp puts out 140,000 lumens but not all of that goes to the sides. most goes down and probably a big percentage is lost to the hood. not to mention the floor and even grow pots can soak in a lot of those lumens like a sponge. in reality I would imagine maybe 30% of the lumens even hitting the sides. then after it reflects back much is lost Rating: 5