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    Sharpen photos the smart way: demystifying Photoshop’s image-sharpening tools

    | Photoshop Tutorials | Tutorials | 07/01/2014 00:01am
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    Sharpen photos with Unsharp Mask

    Sharpen photos with Unsharp Mask

    Found via the drop-down Filter>Sharpening>Unsharp Mask, the Unsharp Mask (USM) Dialog Box has three sliding controls called Amount, Radius and Threshold.

    The Amount slider sets the overall level of sharpening. Radius dictates how large an area around an edge is sharpened.

    Overuse of the Radius control is a common cause of over-sharpening and it is responsible for the introduction of strong outlines and halos.

    SEE MORE: Unsharp Mask – how to ensure the sharpest images possible every time

    The Threshold slider is used to specify which edges are sharpened. When a large value is used, the sharpening is only applied to high contrast edges, while a low value means that the sharpening is also applied to low contrast edges and finer details.

    Finding the correct values takes experimentation, but start with a low Threshold and move the Amount and Radius sliders up and down until the image looks right.

    Required values vary from image to image, but aim to keep the Radius below 3. An Amount of 150-180 is a good starting point.

    PAGE 1: Why use Photoshop to sharpen photos
    PAGE 2: Sharpen photos with Unsharp Mask
    PAGE 3: Sharpening the luminance
    PAGE 4: Sharpen photos in Adobe Camera Raw
    PAGE 5: Sharpen photos with Smart sharpen

    READ MORE

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    101 Photoshop tips you really have to know
    Adobe Camera Raw: 8 tools that will save your raw files
    Raw Images: 10 tips every photographer must know before ditching JPEG


    Posted on Tuesday, January 7th, 2014 at 12:01 am under Photoshop Tutorials, Tutorials.

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