{"slug":"selections-channels-masks","title":"一文理清PS选区、通道、蒙版的关系与用法","author":"Thomas看看世界","date":"2019-04-28","wechat":"https://mp.weixin.qq.com/s?__biz=MzI4NDA5MzE5NQ==&mid=2247488880&idx=1&sn=a5150e85532267dffe85fc6aa7ab6586&chksm=eb81eb14dcf66202e09e44c196e623b1e7a90519bcbc3f2ab00cde065f1b1a7a64f6c98f955e&scene=21#wechat_redirect","blocks":[{"t":"h","x":"Thomas看看世界","xe":"Thomas Chu Photo"},{"t":"p","x":"选区、通道和蒙版，是Photoshop中的三个重要概念，也是摄影后期局部调整，经常使用的工具。","b":false,"xe":"Selections, channels, and masks are three important concepts in Photoshop — and tools frequently used for local adjustments in photo post-processing."},{"t":"p","x":"今天的教程中，托马斯就会帮大家理清三者的关系，他们之间的互相转换，以及常见的用法。","b":false,"xe":"In today's tutorial, Thomas clarifies the relationship between the three, how they convert into one another, and their common uses."},{"t":"img","f":"img-02","w":1067,"h":1600},{"t":"h","x":"视频教程","xe":"Video Tutorial"},{"t":"video"},{"t":"p","x":"高清视频：","b":false,"xe":"HD video:"},{"t":"h","x":"https://www.bilibili.com/video/av50626675/","xe":"https://www.bilibili.com/video/av50626675/"},{"t":"p","x":"下面的这幅图，一定要牢记噢。","b":false,"xe":"Be sure to memorize the diagram below."},{"t":"img","f":"img-03","w":1080,"h":809},{"t":"p","x":"1）一般建议把复杂的选区，以Alpha通道的形式储存起来，便于再次使用。","b":false,"xe":"1) Complex selections are best saved as Alpha channels so they can be reused later."},{"t":"p","x":"2）不光Alpha通道可以快速转换回选区，普通的亮度通道、红绿蓝通道，也是可以转换成选区的，有时可以起到抠图奇效。","b":false,"xe":"2) Not only can Alpha channels be converted back into selections — ordinary luminosity channels and the red, green, and blue channels can also become selections, sometimes working wonders for cutouts."},{"t":"p","x":"3）选区也可以和蒙版相互转换，让图层的效果只作用于选区区域。把选区转换为相应的蒙版，一共有三种情况。","b":false,"xe":"3) Selections and masks also convert into each other, confining a layer's effect to the selected area. There are three cases when converting a selection into a corresponding mask."},{"t":"h","x":"欢迎关注托马斯的旅行与摄影攻略","xe":"Follow Thomas for more travel and photography tips"}],"titleEn":"Selections, Channels, and Masks in PS: Their Relationship and Uses, Explained"}