tutorial on the use of Photoshop Smart sharpening filters

Photoshop sharpening filters have the USM sharpening, further sharpening, sharpening, edge sharpening and intelligent sharpening five kinds.

The "USM Sharpening" filter is to sharpen the image by enhancing the contrast of the edges of the image, and the greater the sharpening value the easier it is to produce black edges and white edges;

And the "sharpen", "sharpen" and "Edge sharpening" filters are the software set default values to sharpen the image, the result is beyond control, the more sharp the resulting particles more obvious.

The smart sharpen filter has sharpening control that is not available with the USM sharpening filter, you can set sharpening algorithms, or control the sharpness in shadows and high light areas, and avoid problems such as color Halo,

Play a role in making image details clear.

Now let's take a look at the smart sharpen filter.

Basic settings

Open the Smart Sharpen Filter dialog box, first look at the basic settings. Quantity: Sets the sharpness, the greater the value, the stronger the contrast of the pixel edges, making it look sharper.

Radius: Determines the amount of sharpening that is affected by sharpening around the edge pixel, the greater the radius, the wider the edge affected, and the sharper the effect of sharpening.

Angle: Sets the motion direction for the "move Blur" item of the "Remove" item, as shown below:

Remove: Set to sharpen the image sharpening algorithm, "Gaussian blur" is the "USM Sharpening" filter using the method; Lens Blur "will detect the edges and details in the image;

"Motion blur" attempts to reduce the blur effect caused by camera or body movement, as shown in the following illustration:

Select "Motion blur" to set "angle".

More accurate: Process files at slower speeds to remove ambiguity more precisely.

Advanced Settings

Select Advanced, the Sharpen panel is equivalent to the basic setting, the shadow and the high light Settings panel are the same, as shown in the following figure:

Fade: Adjusts the sharpness of a high light or shadow. Tonal width: Controls the range of changes in the shadow or light midtones, moving the slider to the left decreases the tonal width value, and moving the slider to the right increases the value.

Smaller values limit shadow correction adjustments for darker areas and only highlight correction for lighter areas. Radius: Controls the size of the area around each pixel, which is used to determine that the pixel is in the shadow

Or in the high light. Moving the slider to the left specifies a smaller area, and moving the slider to the right specifies the larger area.

Having learned the basics of the tool, we take a picture of the Avatar as an example to learn more about the advantages of the tool through specific adjustments. The photos and the effects are pretty good,

But the clarity is slightly inadequate. Here, using the Smart sharpening filter to adjust the image, but also specifically enhance the overall picture contrast, so as to achieve high-definition quality.

The following is the comparison between the original and the revised effect chart:

Steps for adjustment and repair

1, the first application of "Smart sharpening" filter, the "basic" Panel set "quantity" value of "200%", increase the sharpness, enhance the edge of the pixel contrast, so that the image looks sharper;

Set "radius" value is "10 pixels", this is the edge pixel around the sharpness of the impact of the number of sharpening, the greater the radius, the edge of the affected is wider, the effect of sharpening is more obvious;

"Remove" is set to "lens blur", which can be used to distinguish the edge of image and noise noise, and the emphasis is to improve the sharpness and resolution of the intermediate tone. Comparison removes "Gaussian blur",

The difference is that the removal of "lens blur" can better control the edge of the screen produced by the Halo band will not be too wide, to reduce the effect of white edge, and remove "Gaussian blur" will make the edge of the pixel Halo band widening,

Sharpening will appear softer.

For portrait photo sharpening, it is more appropriate to remove "lens blur", and remove "Gaussian blur" for the kind of sharp better; tick "more accurately", remove blur more precisely

2, then select "Advanced", Open the "Shadow" panel, set the "Fade" value of "30%", adjust the sharpness of the shadow, protect the image of the dark part, so as to avoid sharpening excessive; Set the tonal width value to "80%",

Controls the range of shaded midtones, limits the width of the shadow Halo Band, and sets the radius value of 20 pixels to limit the number of shadow pixels. This protects the image from excessive sharpness of the dark part.

3, then, open the "High light" panel to do the same, set the "Fade" value of "20%", adjust the sharpness of the highlight, protect the image of the light, so as to avoid excessive sharpening; Set the tonal width value to "60%",

Control the modification range of the middle hue of the high light, limit the width of the high light Halo band, and set the radius value to "10 pixels" to limit the number of high light pixels. This will better protect the bright part of the image will not be excessive sharpening.

The "Shadow" and "High light" adjustment finally played a role in reducing noise:

4, sharpening finished, truncated portrait of the local comparison, you can see before sharpening and sharpening the obvious difference, "smart sharpening" the advantages of the filter is obvious, sharp sharpness does not destroy the image effect,

But it is relatively effective to sharpen the details. Finally, it needs to be explained that, if the whole map after sharpening and then cooperate to improve the contrast, you can achieve the real meaning of high-definition image effect.

Tips

"Smart Sharpening" filters to supplement and extend the "USM Sharpening" filter, to achieve the sharpening effect of excellence, but the setting is more complex, through the above explanation can realize its beauty.

For large scene photos, or a virtual focus of the photos, as well as a slight shaking caused by a false photo, using the "Smart sharpening" filter can be relatively improved clarity, the image details to retrieve.

It is recommended that the image should be sharpened before the film is repaired, so as to minimize the loss of the quality caused by the repair film.

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Category:

• PS Image Processing