Adjusting brightness and contrast with the tone curve

You can adjust the brightness of each channel.

1. In the main window, double-click the photo you want to edit.

2. Click [Show Edit Tools] on the lower-right corner of the window to display the list of Edit Tools, and select [Tone Curve].

   
   
   
   The correction controller for editing the tone curve is displayed.

3. Correct the photo using the correction controller.

   The histogram and tone curve for the channel being displayed in the drop-down list are shown. You can adjust the tone curve for each channel.
   The horizontal axis shows the brightness (level) of the input image (original photo), and the vertical axis shows the brightness (level) of the output image (photo after adjustment). Since the brightness (level) of the input image and output image are the same before adjustment, the tone curve is a straight line drawn at a 45 degree angle, from bottom left to top right.
   
   
   
   Select the channel that you want to adjust from the drop-down list, and by moving the control point on the tone curve, change the shape of the tone curve to adjust the brightness of the photo. When you move the mouse cursor to the top of the tone curve, a cross appears and when you click, a new control point will be added. Drag the control point to the upper left to make the image brighter, and drag to the lower right to make the image darker.

   • You can drag the control point to move it. However, you cannot move a point across its neighboring point in the horizontal direction.
   • You can delete a control point by double-clicking it or dropping it outside the graph.

4. After correcting the image, click [OK].

   The correction controller for editing the tone curve closes.

5. Click [Save] or [Save As] to save the corrected photo.

   To overwrite the original image file, select [Save].
   To save the corrected photo as a new image file with a new name, select [Save as].

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