Book excerpt: Moving image culture seems to privilege the instantly identifiable: the recognizable face, the well-timed stunt, the perfectly synchronized line of dialogue. Yet perfect, in-focus visibility does not come 'naturally' to the moving image, and if there is one visual effect the eye of the camera can record better than the human eye it is blur. Looking beyond popular media to works of experimental cinema and video art, this groundbreaking collection addresses the aesthetics and politics of moving images in states of decay, distortion, indistinctness and fragmentation. A range of international scholars examines what is at stake in these images' sometimes radical foregrounding of materiality and mediation, or of evanescence and spectrality, as well as their challenging of the dominant position accorded to 'legible' images. How have artists and filmmakers rendered the 'indefinite' image, and what questions does it pose? With a range of approaches, from aesthetics to phenomenology to production studies, the authors in this volume investigate techniques, themes and concepts that emerge from this wilful excavation of the moving image's material base.