I start with placing a Color Control Point (CCP) at the bottom of the purple flower followed by increasing of the brightness (by dragging “B” slider to the right) as shown in the following screen capture. I use the following image to demonstrate the effects of different blending modes in Capture NX2. That is, only areas that are darker due to the enhancement will be applied to the image.
Darken – The Darken blending mode is achieved by applying the effects of the enhancement only if those elements are darker than the corresponding area in the original image. The resulting image is always darker than the original image prior to the enhancement. Multiply – The Multiply blending mode is achieved by subtracting the pixel values of the resulting image from the pixel values of the original image. Values above 128 make the final image brighter in the corresponding area values below 128 make the final image darker in the corresponding area, while the value of 128 does not change the final image. Capture NX 2 determines whether to add or subtract based on the value of the resulting image. Overlay – The Overlay blending mode is achieved by either adding or subtracting the pixel values of the resulting image from the original image. 
The resulting image is always brighter than the original image prior to the enhancement.
Screen – The Screen blending mode is achieved by increasing the pixel values of the resulting image with the pixel values of original image. That is, only areas that are brighter due to the enhancement will be applied to the image. Lighten – The Lighten blending mode is achieved by applying the effects of the enhancement only if those elements are lighter than the corresponding area in the original image. When all channels for the enhancement are applied at 100%, the result is considered a normal enhancement. Normal – The Normal blending mode is the default blending mode for applying enhancements. Using blending modes provides you with an advanced way of applying the current enhancement to your image. The blending mode determines how the image created by the current enhancement blends with the image prior to that enhancement. IR PHOTOGRAPHY NIKON CAPTURE NX2 MANUAL
To begin with, I quote the following from Nikon Capture NX2 manual as a reference so you don’t have go back and forth to find out exactly what I am talking about. The purpose of this post is not to discuss the differences between Nikon Capture NX2 and Adobe Photoshop’s blending (blend) modes, but to illustrate what the blending modes do in Nikon Capture NX2. So some of the blending modes are of little use for photo editing or can be substituted with alternative blending modes. Adobe Photoshop is not only for digital photography, but also for a much wider applications. Are Nikon Capture NX2 users missing out on many useful tools? Perhaps not. Nikon Capture NX2 has only 5 blending modes while Adobe Photoshop has more than 20.
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