Exif

The following table lists recommended fields for the Exif header. Select the following link to download more details about the Exif header . Don’t put any field into the JSON object if it is empty. Also feel free to add custom fields, as long as they adhere to the specification in the above document (no need to prefix custom Exif field names with underscores "_").

Name	Type	Description
ExifVersion	Undefined	The supported Exif version. Absence of this field is signifies nonconformance to the standard (see section 4.2 ). A 4-byte ASCII code representing the version indicates conformance to the standard: 0220 . Since the type is UNDEFINED, there is no NULL for termination.
ImageDescription	String	Image title/name.
DateTime	String	Image creation/modification date and time (Exif uses a single field to represent either creation or last modification). The format is, YYYY:MM:DD HH:MM:SS . Time is 24-hour format. Date and time are separated by a blank character [20.H] . When the date and time are unknown, all the character spaces except colons (":") may be filled with blank characters, or else the Interoperability field may be filled with blank characters. The character string length is 20 bytes including NULL for termination. When the field is left blank, it is treated as unknown.
ImageWidth	Number	The number of pixels in a row of image data.
ImageLength	Number	The number of rows of image data.
ColorSpace	Number	Defines the color space in which the image is intended to display. For further details see section 4.6.5.B .
Compression	Number	The compression scheme used for image data.
Orientation	Number	The image orientation viewed in terms of rows and columns.
Flash	Number	Provides the status of flash used during image capture.
FocalLength	Number	Focal length of the lens, in mm.
WhiteBalance	Number	Provides white balance setting used during image capture.
ExposureTime	Number	Exposure time (in seconds).
FNumber	Number	F number used during image capture.
ExposureProgram	Number	Class of the program used during image capture.
ISOSpeedRatings	Number	ISO Speed and Latitude of the camera, as specified in ISO 12232.
ShutterSpeedValue	Number	Shutter speed. The unit is the APEX (Additive System of Photographic Exposure) setting (see Annex C ).
ApertureValue	Number	Lens aperture as an APEX value.
BrightnessValue	Number	APEX value of image brightness. Ordinarily falls within the range of -99.99 to 99.99. Note that a value of FFFFFFFF.H indicates unknown .
ExposureBiasValue	Number	APEX value of exposure bias. Ordinarily falls within the range of –99.99 to 99.99.
GPSProcessingMethod	String	Names the geolocation method used. The first byte indicates the character code used ( Table 6, Table 7 ), followed by the method name.
GPSLatitudeRef	String	Indicates northern or southern latitude. N indicates northern, S is southern.
GPSLatitude	Number	The latitude at which the image was captured.
GPSLongitudeRef	String	Indicates eastern or western longitude. E indicates eastern, and W is western.
GPSLongitude	Number	The longitude at which the image was captured.
Make	String	The camera manufacturer.
Model	String	The camera model name or number.
Software	String	The name and version of the camera software or firmware used for image capture.
Copyright	String	The copyright notice of the person or organization claiming rights to the image.
MakerNote	String	A tag for manufacturers of Exif writers to record any desired information. The contents are up to the manufacturer, but this tag should not be used for any other than its intended purpose.
ImageUniqueID	String	This tag indicates an identifier assigned uniquely to each image. It is recorded as an ASCII string equivalent to hexadecimal notation and 128-bit fixed length. This tag was added and highly recommended in API level 2.