Which term describes the ability of an imaging system to distinguish tonal details from brightest to darkest parts?

• A. Dynamic Range
• B. Contrast
• C. Resolution
• D. Saturation

Answer: (A)

Tonal range in imaging describes how much detail can be preserved across brightness levels—from the brightest highlights to the darkest shadows. The term that captures a system's ability to distinguish subtle tonal differences across that entire spectrum is dynamic range. A camera or display with a wide dynamic range can render detail in bright skies and deep shadows at the same time because it can differentiate many stops of light. If dynamic range is limited, highlights may clip or shadows become indistinct, leading to lost detail at the extremes. Contrast refers to differences in brightness within an image but over a single scene, not the system’s capacity to capture a broad tonal spectrum. Resolution is about spatial detail and sharpness, while saturation concerns color vividness rather than brightness levels. So dynamic range best describes the ability described.