The `mg.metadata.photo_info` application¶

Requires The mg.media.photo application.

Django models¶

mg.metadata.photo_info Application models¶

Purpose of this application is to gather information about camera parameters for shooting a photo. The only defined model saves sensibility, aperture, focal length, exposure time, and flash presence.

This data can be transparently extracted from Exif data, through the relevant Updaters.

Data can be exposed in a generic way with the relevant Templatetags.

$digraph photo_info { photo [shape = "box", label="Photo\nmg.media.photo"]; photo_info [shape = "box", label="PhotoInfo"]; photo_info -> photo [headlabel = "1", taillabel = "1"]; }$

The PhotoInfo model¶

class mg.metadata.photo_info.models.PhotoInfo¶

photo¶: Pointer to a given Photo.

iso¶: ISO sensitivity.

flash¶: Whether flash fired

focal_length¶: Focal length

aperture¶: Aperture

exposure_time¶: Exposure time

Updaters¶

`ExifPhotoInfo`¶

For Photos only, copy relevant fields from Exif data contained in original photo file to relevant fields of PhotoInfo.

Templatetags¶

The `mg_photo_info` templatetag library¶

In order to use these templatetags, you must use the following code in your template:

{% load mg_photo_info %}

`photo_info`¶

This inclusion tag retrieves the HTML code to display photo information, if available.

{% photo_info photo %}

It actually uses the template named photo_info/photo_info.html.

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The mg.metadata.photo_info application¶