What term describes the difference between the brightest possible source and the faintest detectable source in an image?

What term describes the difference between the brightest possible source and the faintest detectable source in an image?

• A. Contrast Ratio
• B. Exposure
• C. Signal-to-Noise Ratio
• D. Dynamic Range

Answer: (D)

Dynamic range is the span of luminance that an image can represent, from the brightest non-saturated source to the faintest signal that can be distinguished from noise. This measures how much detail you can keep in both highlights and shadows. A wide dynamic range means you can capture very bright areas without clipping while still showing detail in dark areas; a narrow dynamic range leads to blown-out highlights or crushed shadows. The other terms don’t describe this full capture capability: contrast ratio is about the difference between the brightest and darkest areas on a display or in a scene, exposure is the overall amount of light captured, and signal-to-noise ratio focuses on how strong the signal is relative to noise at a given level rather than the overall range from brightest to faintest detectable.

Dynamic range is the span of luminance that an image can represent, from the brightest non-saturated source to the faintest signal that can be distinguished from noise. This measures how much detail you can keep in both highlights and shadows. A wide dynamic range means you can capture very bright areas without clipping while still showing detail in dark areas; a narrow dynamic range leads to blown-out highlights or crushed shadows. The other terms don’t describe this full capture capability: contrast ratio is about the difference between the brightest and darkest areas on a display or in a scene, exposure is the overall amount of light captured, and signal-to-noise ratio focuses on how strong the signal is relative to noise at a given level rather than the overall range from brightest to faintest detectable.