We all get them at times: white lines around our subjects, known as sharpening halos.
They occur when contrasting pixels meet and you will see them often around trees, mountains or buildings against a sky. More often than not though sharpening halos are caused during post processing as a result of too much sharpening. Sharpening an image after all is increasing edge contrast and with too much sharpening, those thin white lines around our subject appear. There is a quick way to get rid of them though and here is how.
You will need a pixel editor like Photoshop (which happens to be the application I use).
The result (zoomed in):
BEFORE:
AFTER:
They occur when contrasting pixels meet and you will see them often around trees, mountains or buildings against a sky. More often than not though sharpening halos are caused during post processing as a result of too much sharpening. Sharpening an image after all is increasing edge contrast and with too much sharpening, those thin white lines around our subject appear. There is a quick way to get rid of them though and here is how.
You will need a pixel editor like Photoshop (which happens to be the application I use).
- Open your image in Photoshop and duplicate it.
- Select the clone tool.
- Set the blending mode to Darken and the opacity at 90%.
- Then with a brush size a little larger than the thin white halo, sample the colour you want to replace the white halo with, just outside the halo and then drag the brush over the halo. Resample as often as you need.
The result (zoomed in):
BEFORE:
AFTER:
