Which tone-curve option provides precise control by placing points on the curve?

Which tone-curve option provides precise control by placing points on the curve?

• A. Parametric Tone Curve
• B. Point Curve
• C. Hue-Saturation Curve
• D. Luminance Curve

Answer: (B)

Placing points on the curve provides precise, local control over how brightness values map to output. A Point Curve lets you click to add anchor points at specific tonal values (shadows, midtones, highlights) and drag them to sculpt the curve. That direct placement lets you shape subtle transitions exactly where you want, giving fine-grained control over how individual brightness ranges are rendered in the image. The other curve options operate differently: a Parametric Tone Curve uses sliders to adjust overall tonal response (slope, offset, and inflection), which yields broader changes rather than exact point-by-point shaping. A Hue-Saturation Curve targets color relationships and saturation rather than pure tonal mapping. A Luminance Curve adjusts brightness in the luminance channel but typically without the same anchor-point precision on the curve itself. So, the ability to place points on the curve for precise adjustments is what makes the Point Curve the correct choice.

Placing points on the curve provides precise, local control over how brightness values map to output. A Point Curve lets you click to add anchor points at specific tonal values (shadows, midtones, highlights) and drag them to sculpt the curve. That direct placement lets you shape subtle transitions exactly where you want, giving fine-grained control over how individual brightness ranges are rendered in the image.

The other curve options operate differently: a Parametric Tone Curve uses sliders to adjust overall tonal response (slope, offset, and inflection), which yields broader changes rather than exact point-by-point shaping. A Hue-Saturation Curve targets color relationships and saturation rather than pure tonal mapping. A Luminance Curve adjusts brightness in the luminance channel but typically without the same anchor-point precision on the curve itself. So, the ability to place points on the curve for precise adjustments is what makes the Point Curve the correct choice.