How Do I Do That in Photoshop?

Convert to Black and White?

Click on the Create New Adjustment Layer icon at the bottom of the Layers panel (it’s the fourth one from the left; its icon looks like a circle that’s half white/half black), and choose Black & White from the pop-up menu. When the Properties panel appears (shown above left), your image is already converted to black and white, but you can tweak that conversion by moving the color sliders in the panel, and you’ll see instantly onscreen how adjusting those colors in the color version of the image affects the black-and-white ...