Just Because You Can...
I was put in mind of this when looked at an advertisement on a Facebook link ( in itself a source of nervousness...) that had a man offering to instruct us in studio lighting. I did not open the link - I never do - but I looked at the advertising image closely.
It appears that the chap has strung four speedlights out on a metal bar and bolted this to the top of a light stand, then pointed it at a paper backdrop. He has another speedlight on a light stand and one on the camera. I can't see what sort of speedlights they are but they might be Canon or Nikon. They might even be a mixed bag.
I am wondering if he intends to use the bank of four speedlights as a flood...and the others as main and fill. Or sort of a general explosion of uncontrolled light. Or he just owns shares in Duracell and wants to sell batteries...
I hasten to add that I am a firm fan of the strobist approach to field lighting - the impromptu studio that you can drag out of the boot of a hatchback - the studio that doesn't need AC mains to run. I do it all the time - but I don't do it with four speedlights perched on the top of a telephone pole. One main, one firing into a softbox, and one if I am feeling fancy for a hair light. 12 lithium batteries - 600 shots for $ 60.
I have a feeling that the chap in the video is sitting on $ 120 of little AA's and $ 3000 of speedlights as well as three light stands.. He could have put less money into an Elinchrom D-lite monolight kit and a Jinbei portable battery and simplified matters greatly.
Perhaps he has a secret recipe of 11 different herbs and spices that need the speedlights...and good on him if he needs to buy more speedlights. We SELL speedlights. But remember there are other ways to do the job.