Fundamentally, all writing is about the same thing; it's about dying, about the brief flicker of time we have here, and the frustration that it creates.
Every photo you take communicates something about a moment in time - a brief slice of time of where you were, who you were with, and what you were doing.
I will be brief. Not nearly so brief as Salvador Dali, who gave the world's shortest speech. He said I will be so brief I have already finished, and he sat down.