Digital BW, The Print

--- In DigitalBlackandWhiteThePrint@yahoogroups.com, "Joost Horsten" <j.h.j.h@...> wrote:
> With the use of mathematics (deconvolution) it's possible to retrieve details that are (just) not visible in the original data. For these techniques however it's necessary to know exactly the optical camera & lens behaviour. From what I understand of it, this is what DxO is doing. 
> 

As a matter of fact, yesterday I did some further experiments with DxO on images from a Canon 20D / 70-200 2.8L IS combo. The workflow is a hassle, but I'm impressed by the results. The sharpening is totally based on physics and mathematics and not by arbitrary interpolation and sharpening algorithms and user judgments. In my, so far still limited, experience this is a good prevention against oversharpening.

Furthermore, my impression is that the sharper the original image, the more extra details DxO can retrieve. So DxO is not at all a magic remedy against poor lens quality, focus issues or motion blur. 

Joost