Use this cinematography or projection calculation to plan image geometry, exposure, timing, storage, film footage, or presentation from explicitly stated camera and display parameters.

Maximum Nits (cd/m²)

Required number input.

Minimum Nits (cd/m²)

Required number input.

Contrast ratio from measured maximum and minimum luminance under the same viewing conditions. The tool evaluates the supplied inputs together and returns the named outputs below; it does not infer omitted operating conditions or change the units shown.^[1]

Contrast Ratio

The resulting contrast ratio returned as a number.

• Contrast, dynamic range, luminance, screen gain, and foot-lambert calculations depend on measurement pattern, black level, ambient light, viewing angle, tone mapping, projector calibration, screen uniformity, and standard.
• Use finite inputs in the displayed units and preserve more precision than the final presentation requires. Independently verify safety-critical, financial, compliance, or production decisions.

Confirm critical values with the actual camera, lens, codec, projector, and delivery specification, then run a camera or projection test under representative conditions.

• Screen Gain

  Relative screen gain as measured screen luminance divided by reference matte-white luminance under the same illumination.

• Aspect Ratio Calculation

  Unreduced width-to-height aspect ratio for an image or screen measured in matching units.

• Dynamic Range Stops

  Dynamic range in photographic stops from maximum usable signal divided by minimum usable signal.