/Johntaggburden

What the photograph asserts is the overwhelming truth that 'the thing has been there

engraved images produced by the physionotrace - the briefly fashionable device for tracing profiles were also seen at the time, the end of the eighteenth and beginning of the nineteenth century, as the source of a truth not possessed by conventional images

physionotrace- was, in a sense, the ideological precursor of photography ( an instrument designed to trace a person's physiognomy, most specifically the profile in the form of a silhouette) (descendant of the pantograph, interesting also about scaling )

the risk of making montage a special case: a case of manipulation of otherwise truthful photographic elements.

every photograph is the result of specific and, in every sense, significant distortions which render its relation to any prior reality deeply problemati¢ and raise the question of the determining level of the material apparatus and of the social practices within which photography takes place

The optically 'corrected' legal record of a building far;ade is no less a construction than the montage

The legal record is, in much the same way though for different purposes, an image produced according to certain institutionalised formal rules and technical procedures which define legitimate manipulations and permissible distortions in such a way that, in certain contexts, more or less skilled and suitably trained and validated interpreters may draw inferences from them, on the basis of historically established conventions.

only in this institutional framework that otherwise disputable meanings carry weight

The indexical nature of the photograph - the causative link between the pre-photographic referent and the sign - is therefore highly complex, irreversible, and can guarantee nothing at the level of meaning

cultural and historical process in which particular optical and chemical devices are set to work to organise experience and desire and produce a new reality - the paper image