Sharpen a photo

The Sharpen adjustment changes photos by making edges crisper and better defined.

1. In Phototheca, double-click a photo, then click Edit in the toolbar.
2. Click Adjust in the toolbar.
3. In the Adjust pane, click the disclosure triangle next to Sharpen.
4. Drag the sliders to adjust the sharpness.
5. The Sharpen controls in the Adjust pane.
   • Intensity: Adjusts the strength of the sharpened edges.
   • Edges: Sets the threshold for which groups of pixels are edges and which ones aren’t.
   • Falloff: Makes the sharpening effect look more or less prominent. Increasing the falloff value makes the sharpening more severe; decreasing it softens the effect.