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fSpy + 3ds Max — Quick Guide

What fSpy is

fSpy is a free, open-source camera matching tool that extracts camera parameters and lens distortion from a photograph so you can recreate the same camera in a 3D application.

2. Wrong Axis Alignment Beginners align the Green (Y) line with a horizontal floor line. Wrong. The Green line must align with a line going away from the camera (depth). The Red line is for horizontal width. fspy 3ds max top

How to handle it:

Workflow overview

1. Install fSpy (desktop app) and export the camera as a compatible file (fspy, or use the fSpy Blender/OBJ export where applicable).
2. Import the photo into fSpy, mark vanishing lines and a reference plane to solve camera parameters.
3. Export the solved camera (fspy file or camera data).
4. Import camera parameters into 3ds Max and align your scene geometry to the matched camera.

Step 3: Lock and Load in 3ds Max

Once imported:

• Workflow: In fSpy, click "Orthographic" mode. Then export. In 3ds Max, switch your camera to Orthographic Projection. Your 3D objects will slide perfectly on the 2D isometric map like a digital board game.