Yesterday I was questioned about moire in a DSLR images. There's a great explanation that's about halfway down the post. It explains the false color artifacts you get with fast moving water which I've noticed this in shots I've taken of fountains and in wind blown seas.
According to the article artifacts are created because of motion but I've seen aliasing on a brick building shot on a tripod. The aliasing is there in video but is not there in a still. I've been told this all has to do with throwing away lines going when from a 25 megapixal still camera to a 1080 image.
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