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How to improve the sharpness of photos in Photoshop

22 August 2011 | In Tips - Photoshop | 2,2 thousand views | By

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Mais nitidez com Unsharp Mask 002 thumb[1]

A problem bastante comum em câmeras digitais amadoras e que passa despercebido pela maioria das pessoas  é um leve desfoque nas fotografias.

To correct this “defect”, before you send them to the Mini Lab, simply use the Unsharp Mask filter ( Unsharp mask ).
O filtro aplica a nitidez increasing o contraste ao longo das arestas da imagem. It does not detect edges in an image, Instead, It is located at Threshold ( Threshold ) specified, the pixels that differ in value of pixels closest to. It then increases the contrast of neighboring pixels in the specified intensity. Like this, neighboring pixels lighter they become lighter and still dark, darker still.

To correct this “defect”, before you send them to the Mini Lab, simply use the Unsharp Mask filter ( Unsharp mask ).

The filter applies the sharpness by increasing contrast along the edges of the image. It does not detect edges in an image, Instead, It is located at Threshold ( Threshold ) specified, the pixels that differ in value of pixels closest to. It then increases the contrast of neighboring pixels in the specified intensity. Like this, neighboring pixels lighter they become lighter and still dark, darker still.

Here's how works:

Quickly looking at the photo is good , But if we look well, some details are without focus.

Mais nitidez com Unsharp Mask 000 thumb[1]

Before applying the filter, Press CTRL J to duplicate the layer so that you can compare the before and after.

The sharpening is, in many cases, matter of personal taste. There are people who prefer to discard the adjustment when the blur is minimal, others prefer to use in all photos. What is important to emphasize is: the excessive tuning produces the Halo effect around the edges of the photograph. Use sparingly.

After duplicating the layer, go: Filter/Sharpen/Unsharp mask ( Filter/Sharpen/Unsharp mask ).

Mais nitidez com Unsharp Mask 001 thumb[3]

Move the Amount slider ( Intensity ) for values between 30 e 120% and in the case of high-resolution photos, You can use values between 150 e 20and%

The Radius value ( Ray ) varia de agreement com resolução da imagem. Try values between 1 and 2

The Threshold value ( Threshold ) can be the default 0 ( zero ), as he adjusts the sharpness on all pixels of the image. If there are noise or Posterization, try a value between 2 and 20.

In my picture I used the values shown in the above image. See how it looks:

Mais nitidez com Unsharp Mask 002 thumb[3]
See the comparison with the before and after:

Mais nitidez com Unsharp Mask 003 thumb[1]

Esse é um ajuste extremamente fast de ser executado e você não gastará 2 minutes to adjust the sharpness of your photos.

And you? That technique uses to improve the sharpness of your photos?

Hugs and until next time.

Apaixonado pelo Photoshop desde a versão 7.01, este mineiro que vos fala, sempre gostou de compartilhar seus conhecimentos. Trabalho com manutenção de computadores e ministro aulas para alunos da melhor idade.



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