High Contrast Bleached Photo Effect

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High Contrast Bleached Photo Effect

Post by Fulcon on Sun Dec 07, 2008 1:06 pm

In video, this effect is referred to as a bleach bypass or a skip bleach effect. It's a neat effect that can really make a photo pop, and we'll use channels to make it all happen.

Why use channels?

All images are comprised of three colors; red, green, and blue. Of these three "channels", if you will, one of them will undoubtedly be the lightest, one will be the darkest, and one will be in between. Channels are extremely useful creatures, as you will soon see. You can produce all manner of el coolio photo effects just by tweaking the information contained in each one. Read on!

Finding the lightest channel

I want to make Miss Bootsie (my girlfriend Kathryn's cat) stand out of this photo.
I'll begin by finding the channel where she appears to really pop. Once I find it, I'll copy that channel's information and paste it into my Layers palette where I can start manipulating it.

Step 1:
Cycle through the various channels of any image by pressing Command + 1, 2, or 3. This will cycle through the red, green, and blue channels as long as you keep pushing the buttons. Once you land on the one where the subject matter (the focus of your image, not the background) really stands out, stop.
[TIP: You an also click the Channels tab at the top of the Layers palette to see the channels as you go through them.]





In this example, the background in the green channel is slightly lighter than the rest, highlighting Bootsie.



Step 2:

Once you've landed on the perfect channel, press Command + A (PC: Ctrl + A) to select all and Command + C (PC: Ctrl + C) to copy it to the clipboard.



Go ahead and click the RGB channel at the very top of the channels palette so you have the color image back.



Step 3:

Click the Layers tab and immediately create a new layer by pressing the New Layer icon at the bottom right of the Layers palette



Step 4:

Paste the green channel information onto the new layer by pressing Command + V (PC: Ctrl + V).



Sharpen her up

Step 5:

Hop up to the Filter menu and choose Sharpen > Unsharp Mask. Enter 125% into the Amount field, 1 for Radius, and 1 for Threshold (these are good numbers for fur).



Step 6:

Change the blend mode of the layer to Overlay, and reduce the Opacity to 80%, as shown below. Changing the blend mode will allow the color data of the original image to show back through.



Adding a color cast

Step 7:
Create another new layer at the top of the Layers palette.



Step 8:
Grab the eyedropper tool and sample an area of green from the photo (or if you know what color green you want, just click the foreground color chip and choose it from the color picker).



Step 9:
Fill the new layer with color by pressing Option + Delete (PC: Alt + Delete). Change the blend mode to Color and lower the Opacity to about 50%. Changing the blend mode once again allows us to see the color from the original image below.

Here's an extreme close-up of the after image so you can see the enhanced contrast and sharpness.



And here's a before and after:
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Re: High Contrast Bleached Photo Effect

Post by radeeyjd on Sun Dec 07, 2008 1:08 pm

gud info da Cool Cool Cool
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