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Ray K. Metzker, a modernist photographer who called himself “an intellectual wanderer” and proved it over six decades of audacious experiment — he sometimes overlapped exposures to make a single picture from a roll of film — died on Thursday in Philadelphia. He was 83.

Laurence Miller, a Manhattan gallery owner who is now showing a retrospective exhibition of Mr. Metzker’s work, announced the death.

“He wasn’t just trying to be different,” Mr. Miller said in an interview on Friday. “He was terrifically different. He was never satisfied with simplicity.”