Handy Techniques for Cutting Out Hair in Photoshop

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Handy Techniques for Cutting Out Hair in Photoshop
The best photos are those professional studio type shots that are taken against a plain white background. These shots make it much easier to find the edges of the subject, but trimming out fine hairs can still be a little tricky. In this example we’ll be using the common Channel technique to trim out this lovely lady.

Open up your image in Photoshop. This particular image doesn’t have a pure white background, but it is a plain colour and has good contrast between the subject and grey backdrop.

Head over to the Channels palette and review each of the Red, Green and Blue channels. Each one will be made up of slightly different tones, pick the one with the most contrast between foreground and background. Drag this channel onto the new channel icon to duplicate it.

With only the new channel selected, adjust the Levels (CMD+L) to dramatically increase the contrast between light and dark areas. However, don’t go too far, as you’ll notice some horrendous pixilation appearing in the fine areas.

Due to the slight variation in tone of the background, it appears grey in the darker areas. Use the Dodge tool set to a low Opacity to target the highlights and brush over this background area to really brighten it up.

Switch over to the Burn tool and target the shadows to dramatically darken down the inner areas of the image to pure black.

Use the brush tool to finish off the blacks by painting over the remaining areas of the inner section of the image

Inverse the image to switch over the black and white areas (CMD+I), and give a quick check for any stray areas that may have been missed by the brush.

CMD+Click the Channel thumbnail to load the selection, then turn back on the visibility of the original channels. Head back over to the Layers palette and copy the selection. Paste it on a new layer and hide the original to see the cut out image against transparency.

The selection has managed to trim out even the finest of hairs to give a realistic cut. Paste the photo against an alternate background. Zoom in and check for any light coloured fringes around the edges, especially if placed against a darker background. These can be reduced using the Burn tool set to Highlights and gently brushed over the outline of the image.

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