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I'm taking simple product photo on white background with two softboxes on sides. On some products (especially white), I get strange blue-violet glowing effect on edges:

enter image description here

Link to larger image

Anyone knows what can cause it and how to fix?

Shooting with Nikon D3100, 18-105mm lense (22mm, ISO100, f/8, 1/25).

Thank you.

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    \$\begingroup\$ Possibly chromatic aberrations? Are you getting this affect on only that lens or multiple? See this question for some advice on how to minimize the affect. \$\endgroup\$
    – Mitch Goshorn
    Commented May 17, 2014 at 19:58
  • \$\begingroup\$ @MitchGoshorn, thank you very much, looks like you're right, now I know what to search for. \$\endgroup\$
    – Dmytro Semenov
    Commented May 17, 2014 at 20:11
  • \$\begingroup\$ Almost certainly chromatic aberration. Any decent RAW processor will get rid of it very quickly. \$\endgroup\$
    – ElendilTheTall
    Commented May 17, 2014 at 20:26
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    \$\begingroup\$ More specifically, this is lateral chromatic aberration: you can see that the outer (closer to the corner) edges are greenish and the inner ones are purplish. This type of chromatic aberration is easier to correct during postprocessing: RAW converters will typically have an option for it. \$\endgroup\$
    – Szabolcs
    Commented May 18, 2014 at 2:00

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This is purple fringing and occurs either digitally during color-interpolation or optically when a lens does not focus all wave-lengths the same. The latter is generally known as chromatic aberration. It can be other colors than purple in that case.

In either case, you can correct the issue post-processing using chromatic aberration removal. Some cameras have that feature built-in which is quite effective but not perfect. It really depends on the model.

Adobe Lightroom, since version 4, offers a simple tool to remove this. You can even sample from the fringe to have it remove the exact color. I have used it and can say it works quite well.

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