Lumion can output Ray Traced images in the following resolutions:

(16:9 Aspect Ratio)

• Email (1280x720) 
• Full HD (1920x1080) 
• Quad HD (2560x1440) 
• Print (3840x2060) 

For other aspect ratios and available resolutions, see this article:

• Knowledge Base: What Aspect Ratios and Resolutions are available in Lumion?

Poster Resolution is currently not available when Raytracing is on. This is due to a technical constraint that affects the tile rendering system used in that resolution, which will be resolved in a future update.

However, you can use the AI Upscaler introduced in Lumion 2025 to upscale a 3840x2060 Ray Traced render to 7680x4320. See this article:

• Knowledge Base: How does the AI Upscaler work in Lumion?

You can also use free online AI upscaling software such as Bigjpg or Waifu2x. 

Comparisons of details between a Full HD and Print image:

Full HD

Ultra HD (4K)

Note:  If your video card is low on memory before rendering high-resolution images or videos, this message may appear :

This article explains why:

• Knowledge Base: What does the message 'Low VRAM detected' mean?

See Also:

• Knowledge Base:  How do you render images at a higher resolution than Poster renderings?