What Is the Algorithm Behind Photoshop's Black and White Adjustment Layer?

1. What does the black and white adjustment layer Photoshop?
2. Why is black and white disabled in Photoshop?
3. How do I get rid of black and white adjustment layer in Photoshop?

What does the black and white adjustment layer Photoshop?

The Black & White Adjustment Layer allows you to easily make a color image appear grayscale and then apply other effects from there. This feature works the same in all recent versions of Adobe Photoshop: CS5, CS6, and Creative Cloud (CC). and select Black & White . In the Adjustment Panel , check the box for Tint .

Why is black and white disabled in Photoshop?

If the Black and White adjustments option is greyed, out it's likely because your image isn't in an RGB color space.

How do I get rid of black and white adjustment layer in Photoshop?

Turn the black and white effect on and off by clicking on the layer visibility icon. With the adjustment layer turned off, the document window once again displays the original full color image. Click again on the layer visibility icon to turn the adjustment layer back on and switch back to the black and white version.