本教程是由video2brain机构出品的Photoshop巧用alpha通道图像润饰教程，教程使用软件：Photoshop，德语。
Photoshop是Adobe公司旗下最为出名的图像处理软件之一，集图像扫描、编辑修改、图像制作、广告创意，图像输入与输出于一体的图形图像处理软件，深受广大平面设计人员和电脑美术爱好者的喜爱。CS5加入了全面改进后的高清视频渲染引擎Mercury，尤其是其视频处理软件Premiere Pro。Mercury可以利用显卡的图形处理能力加速对高清格式视频的编解码和播放，当然不是所有的显卡，由于和NVIDIA之前达成的协议，Mercury只 支持NVIDIA的显卡。
video2brain Photoshop Special channels Clever image retouching with alpha channels
Channels provide extensive opportunities for image retouching, the use of spot colors and to create selections. This allows the brightness values and load with a little trick and a free additional filters, the color saturation of images as a selection process in these channels further and much more. Look Karsten Rose on the shoulder and explore the performance of channels for professional use!
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