Windows are more than two-way view portals. Reflections in windows have fascinated photographers since the early days. Light plays a big role if one side has more of it the other. Reflections give you “eyes in the back of your head” so you can see what’s behind you. CDP members show us what not everyone can see.Windows are more than two-way view portals. Reflections in windows have fascinated photographers since the early days. Light plays a big role if one side has more of it the other. Reflections give you “eyes in the back of your head” so you can see what’s behind you. CDP members show us what not everyone can see.