In your 3ds Max viewport:
The key is that fSpy typically works with multi-point perspective images. For a top-down view where all lines are parallel (a zero-point perspective or orthographic view), you must provide the camera's focal length, as the automatic solving system doesn't have vanishing points to calculate.
To see your 3D models interact seamlessly with the photo, you must set the calibrated image as your viewport background. fspy 3ds max top
Note: Ensure your 3ds Max system units match the target scale unit used during your fSpy calibration session (e.g., Meters or Centimeters). Step 3: Aligning the Environment Background
This comprehensive guide covers everything you need to know about using fSpy with 3ds Max to achieve perfect perspective alignment. What is fSpy and Why Use It? In your 3ds Max viewport: The key is
To cast realistic shadows from your 3D objects onto the flat surfaces of the photograph, create a floor plane and assign a Matte/Shadow material (or a V-Ray Shadow Catcher / Corona Shadow Catcher material) to it.
It includes 3D horizon lines and preview grids to verify the match before exporting. Note: Ensure your 3ds Max system units match
Go to the menu (the little hammer icon or Scripting > Run Script ). Navigate to your camera_data.ms and run it.
Second, you . Since 3ds Max does not have a native, built-in .fspy importer, you have two options: manually copy the values from fSpy into a 3ds Max camera or use a third-party Python script designed for this task.
You will see two pairs of colored lines (e.g., Red for X, Green for Y, or Blue for Z).