Originally posted by HermanLee Albert,
so what does this DxO do to DA*16-50 exactly?
Not that I don't want to try it myself, but I just hate installing too many softwares in my computer. Especially when I don't find it useful later on.
DxO is a company specializing in measuring camera sensors and lenses, i.e. dynamic range, sharpness, chromatic abberation, distortion etc.
This means that they have accumulated a lot of knowledge about different lenses, and they apply this knowledge in DxO Optics. By analyzing the EXIF data of your image, the software applies fixes that are customized for lens, aperture, focal length, distance to subject and probably a bunch of other things. I find it particularly useful for distortion, vignetting and abberations.