Architect Ljubomir Janković, author of the interior of "Aleksandar Caffe" from 1998, had a special request that in the photo all light sources in the space should be balanced, even though they are of different intensity. To meet this requirement, I shot at night in total darkness, from a tripod, using infinity exposure, a fixed aperture of f32, and alternately turning each group of lights on and off individually, according to a pre-measured duration. This is how I applied layer by layer of light to the film and got a balanced photo.