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photographer

Lowercase in National Geographic magazine text:
            National Geographic photographer Jodi Cobb.

But
Non-staff assignment photographers whose work has appeared in National Geographic publications may be identified in other publications or films as a photographer "whose work has appeared in National Geographic" or "who has been published in National Geographic" (avoid referring to them as National Geographic photographers in non-Geographic publications):
            Jodi Cobb, who has been published in National Geographic.