Fenestra

Edit — Working with 3D Models

Generate photorealistic renders from a 3D model using camera views you set up directly in the browser.

Open page in AI / Copy page prompt
Video preview

Start a new session

Click the + button in the left sidebar to create a new session.

Load your model

Click Upload Image / 3D to upload a new model or Browse Assets if you've already uploaded one. Fenestra supports GLB, FBX and 3DM files up to 150 MB.

Your model renders entirely in the browser, meaning it works on any device without specialist hardware.

A 3D model loaded in the Edit workspace

Use standard controls to move around your model:

  • Click and drag → rotate
  • Right click and drag → pan
  • Scroll or trackpad → zoom

Adjust your 3D controls

On the right side of the workspace you'll find your 3D controls. Use these to adjust FOV, lighting, environment and more to set up your scene before generating.

The right panel showing 3D controls

Save camera views

Position your model at the angle you want to render from and save it as a camera view. These saved views become the inputs for your AI generations. Work through your key angles - approach, entrance, aerial, rear elevation - before generating.

Saved camera views in the session sidebar

Set your parameters

  • Model → Nano Banana 2
  • Image count → 2
  • Aspect ratio → 16:9
  • Resolution → your preference

Write your prompt

Be specific about materials, environment and lighting but keep the prompt simple. Reference the 3D model directly so Fenestra knows what it's working from. For this example we used:

"Turn this 3D architectural model into a photorealistic architectural visualisation with light vertical timber panels, zinc roof. Stunning landscape design and long shadows, early morning sun."

You'll get the best results when your 3D model has textures - these give the AI more information about what to render.

Prompt bar with 3D model reference

Generate and compare

Click Edit to generate. Once your results appear click any image to open it and hit Compare to see your model view alongside the rendered output.

Before
After
Before
After
Before
After
Video preview

Next steps

  • Take your model live with Realtime and watch generations update as you move the camera.
  • Animate your renders into cinematic clips with Video.

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