LUF Scope is an expanded cinema work that explores the full potential of film projection under minimal conditions. It unfolds as a live projection centered on the feedback loop between the screen, the camera, and the audience's presence in the here and now. Using a shutter speed control device, the work exposes the color spectrum of the projector's internal color wheel onto the screen, making the projection's optical mechanism visible through movement. This spectral field is continuously captured by a live camera, revealing not only the interaction between camera and screen but also the audience as they observe themselves observing. Rotational movements circulate in real time within the projector, across the screen's surface, through the camera lens, and into the eyes of the viewers, producing a cinematic system of self-observation. In this loop, the projection becomes both image and event, grounding the experience in the immediacy of the present moment.