Ah HA!!! Now we're geting somewhere!
Movies like "Pi" (sorry,I don't have the symbol) and 23 with Jim Carrey were interesting treatments of the subject of numerology. Pi was quite disturibing in its own right.
I've started wondering about the Fibonacci sequence...Pascal's Triangle (3 sides!), Euclidean geometry...I have some reading to do this weekend!
For this interested in some history, see the
wiki on the golden ratio. Looks like those of you who mentioned Da Vinci were spot on. About half way down it shows what I was talking about in my original post, that the human face does follow the rule of thirds when only looking at the 'communicative' part of the visage.
I was thinking too about how else things could be hard wired into the visual part of our brain. PDL you mentioned that a subject in the centre of a frame is often boring, and that got me to thinking about why things outside our heavily 'centrally weighted' tunnel vision are perceived.
Visually, we do 'zoom in' on things and have a great deal of focus on the central part of our vision. This is why people often clash when the subject of a 'normal' lens comes up, about how it 'reflects the standard human FOV' and such. Our field of vision is really complicated. If you see an eagle a few kilometers away in the sky, you focus your attention on it and can make out some pretty small details. But think about it...when you throw, say, a 200mm or 300mm lens on a camera and take a shot, it isn't a magical magnifying glass that has necessarily captured more than you were perceiving without the lens. Similarly, if you sit back and try and take in a mountain vista, sometimes that wide lens doesn't quite capture it all.
But I digress. What I was getting at is that our peripheral vision has been developed to be sensitive to different things than our central FOV:
"The distinctions between central and peripheral vision are reflected in subtle physiological and anatomical differences in the visual cortex. Different visual areas contribute to the processing of visual information coming from different parts of the visual field, and a complex of visual areas located along the banks of the interhemispheric fissure (a deep groove that separates the two brain hemispheres) has been linked to peripheral vision. It has been suggested that these areas are important for fast reactions to visual stimuli in the periphery, and monitoring body position relative to gravity" -
Wikipedia
Okay I know, I'm using wikipedia for my research, but it's quick and I'm not in university anymore
So 'near-peripheral' and mid-peripheral stimulus activate different parts of our brains. They resolve less detail, are less sensitive to colour and shape. But in this part of our vision, we are sensitive to motion, originally to detect predators. This leads me to wonder about why we scan photos the way we do (as mentioned by a previous poster), and how that scanning is actually a process of discovery. As we move our eyes across an image, we stimulate the different parts of our brain. Details and colours are revealed in the central axis, while in our peripheral vision we see things totally differently.
Cool.