Perspective. Acuity. Sight.
How does each of us see - The same? Are we monochromatic with our vision in deference to each other? What slivers of the "visible" spectrum might I be missing? What are the details a visual artist insists I see? This strange game of addition and subtraction with electrons... this flow of static dimension.
It is always fun to shoot with other photographers - to get a glimpse of how they "see".