Example Concept: Tone curves enable photographers to adjust the luminance levels of shadows, midtones, and highlights independently. By creating an "S" curve, you can increase contrast, making the image more dynamic. Alternatively, lifting the shadows and lowering the highlights can produce a matte effect, often used for a vintage or filmic look. Adjusting individual RGB channels can also shift colors for creative effects, such as adding warmth or coolness to the image.