Deleuze's concept: images that collapse past/present, real/dream simultaneously—double without clarity. Cinema art since Welles.
Crystal Image
Deleuze coined this term to describe a specific visual phenomenon that has emerged in cinema since Welles: two superimposed planes of time that mirror each other without one "explaining" the other. Not editing in the classical sense – but a simultaneous presence of past and present, of memory and immediate experience within the same image space. The crystal image functions like an optical double reflection, in which both layers appear equally real and interpenetrate each other.
On set or in the edit, you recognize this by the fact that there is no clear hierarchy between the planes of time. In Welles, for example – Citizen Kane, F for Fake – you don't see "someone is remembering now," but rather: both times are simultaneously present, superimposed, sometimes physically in the same image space. This also includes the blurriness between dream and reality, between documentary factuality and subjective distortion. The crystal image doesn't ask: Which version is true? It shows: Both exist in parallel. You find this structure later in the works of Tarkovsky, in Lynch, or in contemporary cinema that consciously rejects classic plot-flashbacks.
Practically, this means: If you want to construct a crystal image, don't work with clear cuts or voice-over markers. Use optical superimpositions, double exposure, subtle grading shifts, or make spaces appear so similar that they could be simultaneous – two places, two moments, one image. The camera must remain neutral, not "narrating" which layer is "real." This creates this fluid impression of doubling, this suspended state between enlightenment and uncertainty that Deleuze described.
This fundamentally differs from a flashback or classic point-of-view editing thinking. In a crystal image, there is no external narrative instance that says: "Remember what was before." Instead, the image composition itself creates this simultaneity. The audience doesn't experience becoming-aware-of-a-memory, but an optical uncertainty about which time they are in – and whether that is even distinguishable.