actually a team of electricians and illuminators comes the day before the shoot (as usual, they call it pre light day) also comes cinematographer who decides where to put the light spots. in this particular case they hang light boxes in a structure above
they also put tripods with Lights on the sides through the layers Front (trees) and behind (mountain)
the type of equipment used was cables and metallic structures ,reflectors,and filters light blue and green colors , there were also the MINI-BRUTE lighs, I do not know how it translates into English.
I'll leave the link below of the supplier
thank you very much for your compliment ! , I made this panel as a background scene for a television commercial soft drink(guarana )made from a fruit that is born in the amazon. This is why the reason of a tropical forest with snow, I painted this scene in two layers, one in front with trees and another with the mountains behind, everything was done with the free hand brush and airbrush, I used acrylic paint.
you can go to my gallery and see another picture of the making of.