Easy to tell that's most likely a model because very, very few electrical engineers paint their fingernails. So far, I have only seen 2 electrical engineers who painted their fingernails. (It's more common for software engineers.)
But then again, what model would wear pantyhose that's long overdue for replacement on a photo shoot? Maybe they're really going for the "amateur" look?
That desk lamp would be annoying.
Looks like it's for backlighting PCBs to aid in reverse engineering. Most power supply boards are 2 layers at most so such a trick is effective.