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what's the diff?

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  • 0lBaldy
    replied
    Re: what's the diff?

    Feathering blurs edges by building a transition between the selection and surrounding pixels. This blurring can cause some loss of detail at the edge of the selection.

    Anti-aliasing soothes the jagged edges of a selection by softening the color transition between edge pixels and background pixels. Because only the edge pixels change, no detail is lost. Anti-aliasing is useful when cutting, copying, and pasting selections to create composite images.

    After you paste or move an anti-aliased image, unwanted fringes, halos or matting may show around its edges. Defringing replaces the pixels giving a cleaner visual image

    Defringe by going to Layers >Matting>Defringe
    Enter a number of pixels to use for defringing. Photoshop uses the default value of one pixel for defringing. Click "OK."
    Do it again if necessary
    If the Defringe tool does not remove the pixels.... Click Layer>Matting>Color Decontaminate.... This option changes the color of the stray pixels to match the color of a surrounding object.

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  • klev
    replied
    Re: what's the diff?

    You should try to be clearer in your question.

    The term feathering is usually used when you adjust a selection rather than the pixel data. The adjustment is only partly applied to the borders of the selection.

    You can feather something as simple as a selection. This does not actively change any pixel data until you make an adjustment. Defringing or anti-aliasing apply a direct adjustment to the image.

    Remember that the tool icons are just an interface.

    Leave a comment:


  • memphishooter
    started a topic what's the diff?

    what's the diff?

    I am looking at a lesson on selection tools by a Creative Live teacher, and he uses a de-fringing tool along an edge, basically anti-aliasing. The effect seems to be the same as for feathering. What's the difference?
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