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I've a Nikon D810 and am using the nikor 105mm f2.8 macro lens.

I'm also using helicon focus to focus stack images. Unfortunately the resulting picture has a halo effect on some the boundaries of some objects in the image.

What is the best way to completely avoid this?

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  • \$\begingroup\$ You can try to increase the radius of the area the program uses to determine the contrast, see here. \$\endgroup\$
    – Count Iblis
    May 3, 2015 at 3:12
  • \$\begingroup\$ Another reason can be movement of the image - sometimes you can get rid of the halo by removal of one (or more) of the images in the stack. \$\endgroup\$
    – Chris Walton
    May 3, 2015 at 18:53
  • \$\begingroup\$ @CountIblis that was the first thing I tried as per the docs but it didn't make a difference. \$\endgroup\$
    – numan
    May 4, 2015 at 12:41
  • \$\begingroup\$ @ChrisWalton interesting. I should try that next time. Kinda tedious to hunt through pictures (esp. large NEF files) \$\endgroup\$
    – numan
    May 4, 2015 at 12:43
  • \$\begingroup\$ It is not quite as bad as it seems to search through the images - it is usually obvious roughly where in the stack the image lies, and only a portion of the stack needs searching. \$\endgroup\$
    – Chris Walton
    May 4, 2015 at 14:54

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I just increased the DOF from 3.2 to 8 and all the halo just went away.

Please note I did play around with increasing the radius setting but that didn't make a difference.

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