A free mod for Fallout 4, by MasterTobiuo.

Photo Light is a mod that lets you add the influence of ambient light that might be reduced when you were outfitted with “PhotoLight.”

To get this mod, it is craftable from the chem lab. (Category “PHOTO LIGHT” or “PHOTO LIGHT HUD”)

To use the Photo Light:

Only Equip “PHOTO LIGHT” To Player or NPC. Slot 51 (ring) is used by default. It’s possible to change it to 50 (neck) by an option file. When going in and out of a building, the light goes out. Be equipped again at that time or please try a viewpoint change. 

Meanwhile, to use Photo Light HUD:

This is equipment for a player.Slot 51 (ring) is used by default. It’s possible to change it to 50 (neck) by an option file.When a player is equipped with this, the effect of the “PHOTO LIGHT” is given to all friendly NPCs who enter the site automatically.In other words, you’re freed by all settlers from Hardships equipped with “PHOTO LIGHT” separately