This paper is based on the analysis of a few photographs published by El Heraldo de Mexico in 1968 about the student movement. The purpose of this paper is to consider the photograph as an act in which the observer is included. From this point of view, the observer could identify a discursive line of the newspaper and build an independent interpretation. The librarian is an observer.,It is a theoretical description about the objective character of the photographs published by El Heraldo de Mexico in 1968. Considering photography as an act, this paper proposes to empirically identify the whole context of three cases of photographs of the newspaper, as examples.,Based on the contextualized interpretation (or photograph as an act), the photograph is identified as an information object and, therefore, an epistemological object, too. There is a relation between the image and the building of knowledge, through the interpretation of the observer.,There are many studies about cataloguing and classification of images, but there is no study on the theoretical implications. The theory presented in this document comes from the work of other specialists and from other disciplines.,Learning to read visual information is as necessary as reading texts. The visual world waits to be decoded. And the twenty-first-century librarian knows how to organize, preserve and disseminate documentary collections (as photos). Value is how to find, access, decode and build knowledge over them.,In this document, the authors take a position in the library discussion about the image as an information object. Also, this paper promotes development of theoretical studies about this topic by librarians.

中文翻译：

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摄影表演：面向信息视觉教育

本文基于对1968年El Heraldo de Mexico发表的有关学生运动的几张照片的分析。本文的目的是将照片视为包含观察者的行为。从这个角度来看，观察者可以识别报纸的话语线，并建立独立的解释。图书馆员是一个观察者。这是对1968年墨西哥埃尔·赫拉尔多（El Heraldo de Mexico）发行的照片的客观特征的理论描述。考虑到摄影是一种行为，本文建议从经验上确定三种情况下的摄影照片。以报纸为例，基于上下文的解释（或照片作为一种行为），照片被识别为信息对象，因此也被视为认识论对象。通过观察者的解释，图像与知识的建立之间存在联系。关于图像的分类和分类的研究很多，但没有理论意义的研究。本文档中介绍的理论来自其他专家和其他学科的工作。学习阅读视觉信息与阅读文本一样必要。视觉世界等待被解码。二十一世纪的图书馆员知道如何组织，保存和传播文献收藏（如照片）。价值是如何在它们之上查找，访问，解码和建立知识。在本文档中，作者在图书馆讨论中将图像作为信息对象处于立场。此外，本文还促进了图书馆员对此主题的理论研究的发展。