Sharp or unsharp?

QDoes Photoshop’s Unsharp Mask actually sharpen a blurred photo? Lucy Pullen

AThe simple answer is no! But it can help to improve the appearance of sharpness. Ultimately, if your image is blurred due to camera or subject movement, no amount of post-processing will make it sharp. However, by using Photoshop’s Unsharp Mask, you can increase the contrast at the edges of the image, which makes the image appear sharper to the eye. Essentially, it’s a trick that increases edge definition. You have to be careful with it, though: too much Unsharp Mask can easily look wrong. Unsharp Mask adjusts edge contrast to make images seem sharper, but don’t go too far with the settings.