How do I use levels in gimp?
Click and drag the cursor on the tiny black, gray or white triangles under the histogram to change the color level. The black triangle adjusts dark tones or shadows. The gray triangle adjusts mid-tones or gamma. The white triangle adjusts light or highlights.
How does a color histogram work?
A histogram is a graphical representation of the number of pixels in an image. … A color histogram of an image represents the distribution of the composition of colors in the image. It shows different types of colors appeared and the number of pixels in each type of the colors appeared.
What does a good color histogram look like?
In an ideal world, the graph should just touch the left and right edges of the histogram, and not spill up the sides. The graph should also have a nice arch in the center. This is how an ideal histogram might look, evenly distributed, edge to edge, not up the sides. This is a histogram for a dark subject.
What is a curved tool?
The Curves tool is the most sophisticated tool for changing the color, brightness, contrast or transparency of the active layer or a selection. While the Levels tool allows you to work on Shadows and Highlights, the Curves tool allows you to work on any tonal range. It works on RGB images.
How do you read an RGB histogram?
To view the Brightness and RGB histograms, press the playback button on your camera to review your image on the LCD, then press the info or display button until you cycle through to the RGB histogram view.