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how to get this effect?
(please only answer if you know one way to specifically)
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Are you talking about creating a 3D image or just making the blue and red effect in general? I don't have 3D glasses so I can't tell what the picture looks like through them.
I'm going to assume you just want the pretty colors.
To get the colors to look the way they do, you need to load the picture into Photoshop (I'm assuming you have Photoshop?). The basic idea is to get a blueish image and a reddish image and layer them over each other. Duplicate the layer (ctrl + j) and open the Curves Tool (ctrl + m). One layer will be the red, the other, blue. Use the curves tool to isolate the red on one layer, then again to isolate the blue on the second layer. Afterwards, set the top layer's blending style to "Screen". Then, you can shift the topmost layer around a bit. THE END.
(Here's a tutorial if my explanation makes no sense: [Link](Mouse over link to see full location) )
If you want to know how the actual 3D picture is created, the best way is to take two pictures of the subject. After you take the first picture, shift the camera slightly to the side and take a second. Then the method above is used to isolate the colors. The step in which the layer is shifted isn't needed because you've already moved the camera while taking the picture.
This method works with 3D glasses because of the way the brain works with depth. Each eye sees a slightly different image; each image is compared by the brain and the differences between them help determine what is near and what is far. The glasses ensure that each of your eyes only sees one of the images; when your 3D picture is viewed through the blue lens, you only see the red; and vice versa through the red lens. Thus each eye sees a different image, leading you to perceive depth.
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