11 July 2006

MBP Photosession observation

I was playing with my G5 today (not the PPC G5 but the Canon G5) and thought about doing some stills to create some desktop background images for my MBP. The stills came out nice and links to clean images, without any nasty copyright text on them, for the MBP will be put here tonight. However, before I put the images on my server here is an interesting video of what I noticed when I was observing the sleeping beauty with my digicam.

When an MBP goes to sleep, the front sleep indicator light changes its intensity so as to give a feeling of breathing rythm. That is an ingenous idea for a sleeping laptop. While the light seems to go gradually brighter and then becomes dim again, the show was a little different from the view finder of my digicam. The light goes dim and bright while going through a number of brightness levels. If you watch the video, you will see the flickering of the light as it becomes dim and then bright again. The difference comes from the fact that the light is changing the levels fast enough for the human eye to not register the different levels as they pipeline from the eye to the visual cortex is saturated. While the camera's CCD running at 15fps is able to get the flickerings due to some aliasing with the flicker rate of the light.

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