Curve layer in Eduard
A curve layer affects the brightness and contrast of all layers below it. To adjust an individual layer, add a curve to a layer .
Add a point by clicking near the curve.
Move a point by dragging it, or click the point and type input and output values for the point. Dragging a point upwards increases the brightness, and vice versa.
Hint : On macOS 14 and later, press the arrow keys to move the selected blue point. Press the shift key for fast movement. Press the tab key to select the next point, and press the shift and tab keys to select the preceding point.
To delete a point, do one of the following:
Drag the point outside the curve area and release the mouse pointer.
Select a point, then press the delete key. This requires macOS 14.
Select a point, then right-click and choose Delete Selected Point.
Select a point, then choose Delete Selected Point in the menu under the button with three dots in the lower-left corner.
Reset the curve by right-clicking and choosing Reset Curve. The Reset Curve command is also available in the menu shown when clicking on the button with three dots in the lower-left corner.
The histogram shows the distribution of the gray values of the image created by the layer.
Save or load a curve with the button showing three dots in the lower-left corner. Eduard supports the ACV file format for exchanging curves with Adobe Photoshop and other apps.
Hint : When the pointer is over the shaded image, the value of the position at the pointer location is indicated by a circle on the curve.
See also