• Who am I?

    I am Qrystal; or at least, that's my dot-name! Har har. (My name is really Crystal, but that's not as internet-searchable; hence, switching the C for the little-used letter Q.)

    I am here because I enjoy writing. I do this mostly for myself, but I also have a passion for helping others learn things from the things I write. Now that I am done my Ph.D. in Physics, I am stepping away from academic research so that I can indulge in some creative ways to share my knowledge and inspire the appreciation of scientific thinking in others. I am also working as a tutor, which is one of the jobs I've most enjoyed doing in my life so far.


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    • Remove Purple Fringing From Photographs

    Posted by Qrystal on July 28, 2008 at 20:21.
    Category: Concepts. Tags: photography.

    I can’t believe I never thought to look for advice on how to Remove Purple Fringing From Your Photographs until today!  My good old Canon Powershot A75 has only a few flaws, and one is that it is susceptible to purple fringing.  Now that I know how easy it is to remove it from photos, I’m afraid I’m going to have to go through all my photos again and tweak them up!!

    In GIMP, though, I couldn’t follow all the directions given in this tutorial.  When using the HSL tool, there is no eyedropper tool that becomes useable.  However, adjusting the blue saturation level worked beautifully!  I also tweaked the magenta channel a bit in the same dialog, because my purple fringing is tinted a bit towards magenta.

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