A local grading surface for film negatives, driven by real hardware. Bind any parameter by clicking its label and moving a knob; hold space to bypass and see the original.

Grading happens entirely on the GPU in WebGL2, so the response to a knob is immediate rather than a re-render. Chromium only, because it depends on Web MIDI.

Two Kodak GC 400 scans ship with it as demo material — those are the only frames this card ever shows.