Rally,
Mate, I hear what you're saying.
I know that deconvolution and PSFs have been around for some time.
I do think it's great of Canon to put that functionality into their software, though. Each module is about 20-30 MB in size -- one module per lens. So, there's obviously something going on under the hood, more than just a simple algorithm.
My goal has always been to make photographs that resemble paintings. Church, Turner, Bierstadt, et. al., are my heroes. The only way to get the look is to photograph in the appropriate light. But, I still think the image post-DLO resembles a painting, just a bit sharper.
Thanks!
H