On 2010-04-04 21:31 , Christine Nielsen wrote:
http://inielsen.com//bloggerpics/droopy1.jpg
I'm looking for reassurance that this is some kind of iphone camera artifact,
yeah, it stems from the fact that the iPhone doesn't have a shutter, and
doesn't capture the all pixels in an image at once; instead it reads
across the sensor chip over a period of a fraction of a second, so as it
reads from one side to the other, moving objects may be distorted in
unusual ways
you could think of it as a "graduated time filter"
here is another interesting airplane propeller example with more on the
effect
<http://cameratoss.blogspot.com/2007/07/iphone-rolling-shutter-distortion.html>
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