某用户希望搜索同一张图片中同时出现一组友人。
A user wants to search for when a couple of their friends are in the same image together.
他猜想一个流行的应用驾驶家人和朋友之间用不同的焦距来表现同一张图片，例如在Facebook上贴上度假和聚会的照片(Lytro也将会发布一个Facebook应用)。
He thinks a popular use may be families and friends roaming through different perspectives on pictures of, say, vacations and parties posted on Facebook (Lytro will have a Facebook app).
第二步：选择第一张图像，复制并粘贴到一个新的文件中去，在选择第二张图片，复制并粘帖到同一文件中去，你现在有两个图层。
Step 2: Select the first image, copy and paste it into a new file. Select the 2nd image, copy and paste it into the same file.
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