Unsharp Mask
An "Unsharp Mask" filter in Adobe Photoshop is used to sharpen an image, contrary to what its name might lead you to believe. Unsharp masks are probably the most common type of sharpening. Sharpening can help you emphasize texture and detail, and is critical when post-processing most digital images.
| Subject | Amount | Radius | Threshold |
| Soft subjects | 150 | 1 | 10 |
| Portraits | 75 | 2 | 3 |
| Moderate sharpening | 225 | 0.5 | 0 |
| Maximum sharpening | 65 | 4 | 3 |
| All-purpose sharpening | 85 | 1 | 4 |
| Web browser sharpening | 400 | 0.3 | 0 |
