In this piece, I have looked to use art in an attempt to explore a known phenomenon of the visual system: in this case, chromatic adaptation. The name delta in this sense has two meanings. The first is that of the mathematical symbol Δ used to represent change. This refers to not only the changing light in the art piece but the hopeful change in the viewer as they walk away questioning what it is they saw and what they see. The second refers to the landmass that occurs when a flowing body of water meets a still one, such as a river into an ocean. Through this process it has become evident that the knowledge gained is not as important as the questions asked; I now stand on the last bit of dry land before wading into the endless ocean of questions. The focus of this work has been on experience, perception, and presence. It has become clear that, while a viewer may not see change, they do feel that change. The question then becomes how do we become more attuned and adept at recognizing these feelings, what are the implications of doing so, and why does that even matter.