Solo sci-fi filmmaker shares MiniMax H3 workflow for fixing scale drift of small props
BekesHarcos · reddit · 2026-11-14
A solo filmmaker building a sci-fi series with MiniMax H3 in ComfyUI found scale — not faces — the hardest problem: his 9 cm spherical robot kept ballooning in close-ups. His fixes:
- Anchor sizes to on-screen objects instead of centimetres: "a third of her head, never larger than her fist"; never let the small object sit closer to camera than the face it's measured against
- Two-stage pipeline: 4-step previews (DMAD LoRA, 672×384, 1 min, 3 seeds), then native 1344×768 20-step render with same seed/refs only for the keeper
- Shot continuity: previous shot's last frame goes in as a "state reference only, never shown" slot so poses and hands carry over cuts
- Add "rectilinear lens, no fisheye" when a 360 panorama is among refs; failed takes become rule files loaded per-shot by a script
A comparison image contrasts the "9 cm sphere" vs anchored phrasing; the pilot is on YouTube.
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