I’ve been trying out the new PhotoLab channel mixer and black and white mode in DxO PhotoLab 7 and I have to say I’m somewhat underwhelmed. First, it’s a feature that really it should have had before. Second, it’s not very strong in its effect.
Channel mixer
A Photoshop tool for varying the mix of the red, green and blue color channels in a photo. It can be used for color adjustments but is more often used when converting images to black and white to control the tonal rendition. Most software now offers more subtle and sophisticated black and white 'mixing' sliders.