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Original picture
![](https://images.downcodes.com/u/upload/2012/05/18/1(30).jpg)
final renderings
![](https://images.downcodes.com/u/upload/2012/05/18/1(31).jpg)
1. Decolorization. In order to maintain better level details, we use the channel mixer to select a single color to complete the decolorization. As shown in the picture, select Single Color and then confirm.
![](https://images.downcodes.com/u/upload/2012/05/18/1(32).jpg)
2. Adjust the color and add a hue and saturation adjustment layer.
![](https://images.downcodes.com/u/upload/2012/05/18/1(33).jpg)
The setting data is as follows:
![](https://images.downcodes.com/u/upload/2012/05/18/1(34).jpg)
After adjustment, the following picture is obtained:
![](https://images.downcodes.com/u/upload/2012/05/18/1(35).jpg)
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3. To increase the level of black and white contrast, first stamp the layer with Shift+Ctrl+Alt+E, then make two copies, and set the image blending mode to Overlay and Screen respectively, with the opacity both being 70%.
![](https://images.downcodes.com/u/upload/2012/05/18/1(36).jpg)
Get the following effect:
![](https://images.downcodes.com/u/upload/2012/05/18/1(37).jpg)
4. Then stamp the composition and adjust the curve to enhance the contrast effect. The settings are as shown in the figure:
![](https://images.downcodes.com/u/upload/2012/05/18/1(38).jpg)
![](https://images.downcodes.com/u/upload/2012/05/18/1(39).jpg)
Result:
![](https://images.downcodes.com/u/upload/2012/05/18/1(40).jpg)
5. This effect looks more cyan, and finally adjust it with the optional color as follows:
![](https://images.downcodes.com/u/upload/2012/05/18/1(41).jpg)
Final rendering: