Quote:
Originally Posted by SFUVancouver
Another interesting artifact of taking digital photography of fast-moving/refreshing object is propellers:
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That's the rolling shutter effect, and it's why CMOS cameras are considered inferior for video (jello-effect.) CCD cameras have Global shutters, but are pretty much out of production for all but scientific and specialty cameras. They are more expensive (eg $12,000-70,000) and require a lot more power. All pre-HDTV camcorders used to be CCD however, it's just the way the market went.
Hence this is why the vast majority of security cameras are not HD but can see in the dark, they are CCD cameras.