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

Throw Meters (m)

Required number input.

Screen Width Meters (m)

Required number input.

Projector throw ratio as lens-to-screen distance divided by projected image width in matching units. 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]

Throw Ratio

The resulting throw ratio returned as a number.

• Throw, image size, and screen calculations depend on the lens's real throw range, zoom position, shift, keystone, aspect ratio, overscan, mounting tolerance, brightness, ambient light, and sight lines.
• 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.

• Projector Screen Width

  Projected image width from lens-to-screen throw distance divided by lens throw ratio.

• Projector Throw Distance

  Projection throw distance from image width times a specified lens throw ratio.

• Aspect Ratio Calculation

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