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Under infrared light, LaBossiere moved the rolls of film into lightproof drums.

“I suspect that those wars to come will be made horrible beyond my conception by new poison gases, inextinguishable flames and lightproof smoke clouds,” he wrote.

To lightproof the bedroom, “blackout window treatments are a must,” said Greg Roth, a designer at Home Front Build in Los Angeles, by email.

For his signature piece, “Sungazing” — which has been shown in several major cities — he used a simple lightproof box as a camera and photosensitive paper as film.

That’s pretty amazing, considering that the space was never designed to be lightproof.