Light Analysis, an audio-visual installation investigating the sound image of the 16mm film, which, as a media, has the possibility to carry two types of recordings – image and sound. However, as the analogue film bares sensitivity only to light, both recordings have to be recorded optically. Due to this technological limitation, the recording of sound onto the filmstrip translates vibrations of the soundwave into light vibrations. It is then possible to use the sound for the purpose of light analysis. As a tool for the analysis, Spudić used a modified 16mm movie projector in order to have a reversed function: to play a non-illuminated film while the projector lamp modulated by the sound signal illuminates the film, causing the sound and image to be recorded simultaneously. The same projector is then returned to its original state and used to play the recordings. By using optical filters, the light is analysed, and the result can be heard through the sound signal.The installation was produced with the support of Klubvizija SC.