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While 3ds Max includes its own Perspective Match Utility for aligning scenes to photos, many artists prefer the precision and specialized UI of fSpy , a free, open-source camera matching tool.
| Problem | Fix | |--------|------| | Image looks stretched in 3ds Max | Ensure fSpy’s Aspect Ratio matches the image. Re-export. | | Camera moves after locking | Select camera → Animation → Transform → lock all axes in the Motion panel. | | Orthographic view looks wrong | Switch camera type in fSpy to Perspective with Tilt = -90°, then re-export. | | Units mismatch (e.g., 1 cm in fSpy becomes 1 m in Max) | In 3ds Max: Customize → Units Setup → System Units set to match fSpy’s scale. |
Even with perfect execution, the workflow runs into specific glitches. Here is how to fix them.