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 Signal

Required number input.

Minimum Signal

Required number input.

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

Dynamic Range Stops (stops)

The resulting dynamic range stops 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.

• Contrast Ratio

  Contrast ratio from measured maximum and minimum luminance under the same viewing conditions.

• Guide Number Distance

  Maximum flash-to-subject distance from guide number divided by f-number, at the guide number's ISO and flash setting.

• 35mm Equivalent Focal Length

  35 mm full-frame-equivalent focal length using the 36×24 mm diagonal divided by the camera sensor diagonal.