Contrast resolution is a digital system's ability to?

• A. Show small differences in gray levels
• B. Improve spatial resolution
• C. Detect motion
• D. Render color

Answer: (A)

Contrast resolution refers to a digital system’s ability to distinguish subtle differences in brightness across an image. It measures how finely you can separate adjacent gray levels. The higher the contrast resolution, the more gray tones the system can represent, so small differences in density or luminance between neighboring areas become visible. This is different from spatial resolution (which cares about how small a detail is in space), motion detection (which is about changes over time), or color rendering (which concerns representing different colors). So, the correct idea is that contrast resolution is about showing small differences in gray levels. Increasing it comes from more bits per pixel, a wider dynamic range, or better calibration to reveal subtle brightness differences.