hello@andreastumbrink.com

From the workbench.

Notes from current builds, lighting tests, and tool development.

PersonalMar 9, 2026

On the table this week

The primer on the corridor panels is still curing, so here's where things stand.

updatekorethcorridorkeywebsite
LightingMar 6, 2026

Tungsten and LED on the corridor build

Same corridor, same camera, same exposure. The tungsten pass still held the set together better at scale.

lightingtungstenledminiature
Film BuildMar 1, 2026

KORETH: Corridor scale update

The 1:6 corridor is built and primed, waiting for its first detail pass.

korethminiaturepre-productionscale
CorridorKey: Building My Own Green-Screen Tool cover
SoftwareFeb 18, 2026

CorridorKey: Building My Own Green-Screen Tool

I got tired of fighting Keylight and Primatte. So I started building my own keyer. It's called CorridorKey and it actually works now.

corridorkeygreen-screenpythonmachine-learning
Miniature Corridor: First Lighting Pass cover
Film BuildNov 29, 2025

Miniature Corridor: First Lighting Pass

First real lighting test on the corridor. The key light worked. The fill killed it. Classic.

miniaturelightingcamera-test
Servo Y-Axis: When Hardware Fights Back cover
Rig ControlFeb 2, 2025

Servo Y-Axis: When Hardware Fights Back

Spent a full day tuning PID values on the camera rig. The Y-axis oscillates under load. I think the cable routing is the actual problem.

hardwarecalibrationmotion-control