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Image Editing Techniques - I would like to make a dull and lifeless image more dramatic (increase contrast).

This type of enhancement is easily performed using Black and White Control Points in Capture NX 2.
Before

Before

Low contrast makes the image dull.
After

After

Image after enhancement.
The image is more dramatic and distinct.

STEP1

Open an image

The Black and White Control Points we will use here are especially effective for enhancing dull and lifeless images.

Tip : Easily locating shadows and highlights

The following step requires locating the darkest and lightest portions of an image. If locating these points is difficult with normal image display, the double-threshold effect displays the image as a monochrome illustration, making it easy to locate the darkest (shown in black) and lightest (shown in white) portions of the image.
If shadows and highlights are not immediately displayed, adjust the triangle sliders, positioned just under the histogram display when the Double Threshold box is checked.




STEP2

Position a Black Control Point over a shadow portion

1
Select the Black Control Point tool.
2
Place a Black Control Point over the darkest portion of the image (shadow portion). This enhances dark portions throughout the image.
3
The Black Point dialog box is displayed when a Black Control Point is placed over the image, but we will not adjust any of the settings here.

Tip : Adjusting Black Control Point settings

The degree of shadow enhancement can be adjusted using a slider.
The same adjustment can also be made entering a luminosity value into the Black Point dialog box.




STEP3

Position a White Control Point over a highlight portion

1
Select the White Control Point tool.
2
Place a White Control Point over the lightest portion of the image (highlight portion). This restores brightness to the image, making it more dramatic.
3
The White Point dialog box is displayed when a White Control Point is placed over the image, but we will not adjust any of the settings here.

Tip : Adjusting White Control Point settings

Just as with the Black Control Point, the degree of highlight enhancement can be adjusted using the slider. The same adjustment can also be made entering a luminosity value into the White Point dialog box.




STEP4

Enhancement is completed

Enhancement is complete. B/W/N Control Point step is added to the Edit List.

Tip : Notes on Control Point placement

When Black or White Control Points are placed over an image, those points become true black (0 at the default luminance setting) and true white (100 at the default luminance setting), respectively. Therefore, the brightness of the resulting image will vary dramatically depending upon where Control Points are placed.
To achieve optimum brightness enhancement, Black and White Control Points must be positioned over the appropriate shadow and/or highlight portions. More precise positioning of Control Points is possible if image display is enlarged to 100–200%.