To turn a color photo black and white, slide the scale until -100 saturation is reached: Select -100 Saturation to turn a photo black and white. When satisfied with the results, tap the Done ...

Convert image to high-contrast black-and-white in Photoshop Black and white images do not have to be dull and lifeless. There are no colors but they can still look sharp and smooth.

Karl Simon visits Highgate Cemetery to show us the importance of contrast in black-and-white painting on a tablet.