NX2 is unfortunately discontinued since Nikon has separated from the software house that has NX2 programming. This is a very fine feature for me. NX2 highly appreciate lost (patent of the software company) This function refers to the set of control points, - Neutral, Black, White or Color Control Points - These points allow the regional variation of the image without any further selection and the fine setting as brightness contrast color mixing.
NX can of course not replace Photoshop, but for the first or even slight reworking it's perfect.