it is a clear sign of the dark side of the force
FYI, I never use lassos to process image luminosity to avoid what Mike reported below, at least not at the initial stages. What usual I do is to duplicate the image as new layer, apply the correction I want (denoise, luminosity, etc) and than masking this layer with a Layer masks using the same base image as actual mask. The effect of the processing can than be changed by working on the mask (changing its contrast by using levels or its blending by applying a gaussian filter). That means that this usually apply to the whole image. In some limited cases (e.g. this one) I than mask (again through layer masks) the effect I had to limit the strength on certain areas. Working on specific areas with Lassos is usually not good since can easily produce less natural blends..
I agree. lasso is not such a great tool really. It has its moments but really once you start using hide all layer masks or inverted layer masks it seems a bit crude.
I have also seen this effect of a darker ring around luminance images of galaxies occassionally in my own images. It is a definite "thing".
If the theory of dark matter is in fact true and I for one feel it probably is (perhaps it is simply old spent energy particles that are black, like soot for example) , then it would make sense that these dark matter or dark energy clouds would be further out being spent particles rather than further in where more energetic particles would tend to gravitate together. Just a theory. Perhaps we should collect some images that show this effect and send it off to someone at NASA or somewhere.
Greg.
Thanks Rob
Marco[/QUOTE]
