Lumion 2023 and newer versions support the following Aspect Ratios in both Photo and Movie Mode:

Select an aspect Ratio to see available resolutions.

Photo Mode:

Photos: Each Photo can have its own Aspect Ratio.

Photo Set:  Each Photo can have its own Aspect Ratio rendered and is shown as part of the output details.

Movie Mode:

Clip:  The Aspect Ratio as set in the Clip Editor is used.

Movie: The whole movie uses the Aspect Ratio of the first Clip of the Clip Set.

To flip the Aspect Ratio to a portrait proportion, simply click on this button:

Resources:

• External Link:  Pixel Aspect Ratio Calculator
• External Link:  Aspect Ratio Calculator