In trying to comprehend these matters of light and focal length, we bring images into and out of focus as the light shifts and the lens changes. Things become more or less solid, as your perspective shifts with your frequency. You, the observer, are the lens AND the image- so it is impossible for you -under ordinary circumstances- to view and analyze this process in a detached manner. To some extent, you must influence both the process and the results- and therefore your view of the thing you are trying to observe reflects back to you some mirroring of yourself, because you are looking at it through some portion of who and what you are. It's a lovely possibility though, that the light which penetrates you, is something you can see reflected in the eyes of another.
While all of these notions have their place in a kind of interpretive story-telling, where we try to explain reality and the meaning of life to each other- each follows the other as an expounding upon that which we can never truly know. It's like a drop of water trying to explain the ocean to another drop of water. We can catch a fleeting notion of it- because all the essense of that ocean is contained within our being- but we can never examine it with the necessary distance or objectivity to really get to the heart of truth that is maddeningly hidden inside ourselves.