Raise the green curve above the diagonal median to increase the green hues.Drag the red curve down below the diagonal median line to increase the cyan (blue/green) hues.Raise the red curve above the diagonal median line to increase the red hues.Choose to increase the lightness or darkness of each colour individually by using the Red, Green and Blue icon options: Raising or lowering this curve brightens or darkens all the colours in an image simultaneously. This reveals the different curve adjustments options: RGB, Red, Green, Blue, Luminance. Other nodes may be added by touching anywhere on the line to manipulate the presets further.Īs well as the presets, curves can be adjusted manually by tapping the circular icon at the bottom left. Explore these to get an idea of what each does and when you might want to use it. Snapseed offers a selection of preset curves adjustments. Nodes can be added to curves adjustments to change the shape of the curve and the contrast and brightness of the photo. The top half of the line represents the highlights.The middle section of the line represents the midtones.The bottom half of the line represents the shadows.The existing node at the top right represents the white point.The existing node at the bottom left of the line represents the black point.Below it is the histogram graph, which tells us how the light information is distributed in the photo. This line, often referred to as the contrast curve, represents the range of brightness and shadow in images. Opening the tool, rather than finding a curve as the name suggests, there is instead a straight diagonal line from bottom left to top right laid out in a square box. Curves will be familiar to anyone used to editing photos on a computer, but for the sake of smartphone users still learning the jargon, we’ll start from the basics. This very precise way of editing enables much greater adjustment control than when using the contrast slider in the Tune image tool. In a nutshell, this is done by dragging blue dots, known as nodes, on a line: down to decrease, up to increase. The Curves tool is used to adjust hue, brightness, contrast, highlights and shadows in your photos. Image: Jo Bradford Snapseed curves: the basics
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