In praise of AA filters

Started Oct 23, 2013 | Discussions thread
Lee Jay
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Re: example
In reply to rovingtim, Oct 25, 2013

rovingtim wrote:

This is a bird's folded wing surrounded by feathers. The bold diagonals should be plain, but a couple of them have become 'ropey' with a pattern that matches the feathers above them. Why?

That's the point - there's no way to know.  You can't recover aliased information.  The only way to know would be to have another image with sufficient detail to resolve that area.  Without that, there's no way to know if it's real data or aliased information.

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