It was a NASA lighting test in a TV studio and the Big Head guy got caught as he was adjusting lighting levels for the shot.
Your example is a modern use of blue screen tech, not 1970s Chroma Key and cameras...!
You’ve obviously never used Chroma Key. You have to light it perfectly for the best effect, which is why TV studios have fixed lighting and fixed levels set for the Weather segments and other news.
LOL... sorry if you don’t know the difference in color temperatures for different shades of blue, and that’s what the Chromakey picks up or drops out. The blue in the American flag registers a different color temperature.
https://www.youtube.com/watch?v=wx8Ew1V_1tM&feature=youtu.be
We are seeing a lighting test, which is why, a few seconds later, we see the “lighted fake globe” of the earth go from dark to light... or are you claiming that’s the real thing, too?
This is a lighting test... the Big Head guy got caught on camera as he was adjusting the Chroma Key on another camera... while the white plastic model of the “Shuttle” was stationary in another part of the studio.
By the way, where are the stars? LOL LOL LOL!
Actually I have. I used to be an electronic/game tech and often had to work on Chroma Key systems that were used as entertainment mediums where I worked. The lighting was not relevant to anything except for making sure that the lighting levels of the subject and the background matched enough to make it look realistic. The lighting had nothing to do with color bleed through. That was all done with camera and background adjustments.
We are seeing a lighting test, which is why, a few seconds later, we see the “lighted fake globe” of the earth go from dark to light... or are you claiming that’s the real thing, too? This is a lighting test... the Big Head guy got caught on camera as he was adjusting the Chroma Key on another camera... while the white plastic model of the “Shuttle” was stationary in another part of the studio.
Wow...so he has to "adjust" the lighting for a completely black background. That makes no sense at all even with this bit of convoluted logic.
By the way, where are the stars? LOL LOL LOL!
I hope you're not serious. IF you are then you know ZERO about photography and exposure time. On the OFF chance you're serious you might want to check out this: