Chapter 4. Resource Description and Metadata
4.1. Introduction
Click. A professional photographer standing on a mountainside takes a picture with a digital camera. What information should be recorded and associated with the recorded image of the mountain scene? Modern cameras assign an identifier to the stored photograph and they also capture the technical description of the imageâs production: the type of camera, lens, shutter speed, light sensitivity, aperture, and other settings.190[Com] Many modern cameras also record information about the geographic and temporal circumstances surrounding the imageâs creation: the date, time and location on Earth where the photograph is taken. When the image is transferred out of the camera and is published for all to see, it might be useful to record biographical information about the photographer to help viewers relate to the photographer and better understand the photographâs context. There may also be different licenses and copyright information to associate with the pictureâwho owns it and how it can be used.
[190][Com] Most digital cameras use the
Exchangeable Image File
Format (EXIF). The
best source of information about it looks like its
Wikipedia entry.
http://en.wikipedia.org/wiki/Exchangeable_image_file_format.
Four 7-year old boys ...
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