Snapseed tutorial7/29/2023 ![]() Make sure you have the Neutral preset selected first. Increasing the intensity and amount of black and white expands the dynamic range to create a more impactful image. ![]() The result for most of us is a dull and washed out image. This is improving through computational photography (software algorithms). Our smartphones capture a limited range of light (dynamic range). This created a more specific curve (bump in the line) exactly in the desired tonal range of the sand. Next, I placed pins two more pins either side on the curved line and dragged them back to the middle. It increased the brightness of a lot more of the image than intended. I placed a pin in the middle of the line and dragged it upwards. ![]() The sand in the above image are the mid-tones, between the brightest (candles) and darkest parts of the image (background). The extra pins assist to isolate which tonal range of the image will be affected. Lifting the curve above the default line will increase the brightness. You can place additional pins along this line and manipulate the shape of the line to make tonal adjustments to dark and light areas of the image. The diagonal line is often referred to as the contrast curve. ![]() Similar to a histogram, the line across the bottom of the graph as dark on the left and ‘bright on the right’. The pin on the top right corner is the white point. The pin in the bottom left corner is the black point. You can control the intensity of blacks, white and shift colours in the Channels section of the tool. Similar to Tune Image, Curves controls brightness, contrast, highlights and shadows. In summary, the curves tool assists to create a more punchy image. For a long time I limited my adjustments of brightening, darkening and contrast to just the Tune Image and Tonal Contrast tools. Curves is a powerful and intimidating tool.
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