The user may define subclasses of this class.
The agency responsible for collection of the photographic imagery may be stated, as well as the name of a specific photo collection project, if applicable. The camera and lens model and identification may be provided, as well as the calibrated focal length of the lens, if available. The film size (e.g., 9 inch by 9 inch, 6 cm by 6 cm, 24 mm by 36 mm) and film type (e.g., black and white, color infrared, natural color). must be specified. If any correction has been applied to the image, it may be given. The inverse of the scale (e.g. 70000 represents 1:70 000) must be provided, The platformElevation (i.e., flying height) in kilometres may be given. A list of photos may be provided. A beginning date (or date and time) of the photography should be stated. If endDate (or date and time) is unspecified, beginningDate is interpreted simply as a single date (and time) of photography. If the photo(s) have been converted to digital, raster images, band information may be stated.