Vertigo: Madeleine & Judy
Note Madeleine's pin.
Elster = 'magpie' (a bird) in German

Portrait of Carlotta
An early version of the Carlotta portrait, based on Vera Miles

North by Northwest

The flashback
Low in the frame, Judy turns toward the
camera as her flashback begins

The flashback introduces Judy's subjectivity into Vertigo, which is reinforced by shots from her point of view at key moments after this.
See also: point of view