Image files can include ‘metadata’ (extra information, such as camera settings and location) as well as the image itself (which has implied X and Y dimensions, etc.).

PanGazer saves an image as a JFIF (JPEG File Interchange Format) file with extension .jpg or .jpeg.  This will have Exif (Exchangeable image file) metadata, and for spherical images will also have XMP (Extensible Metadata Platform) metadata (some of which are also present in the Exif metadata).  Images may have other metadata that were loaded for the current image; these metadata are copied as-is.

PanGazer currently saves a number of values calculated by PanGazer and also (if available) a small number of ‘well-known’ values copied from the source Exif metadata, as follows.

Numerical values calculated by PanGazer when a view is saved (if available, these override values from the source image):

• view (camera) tilt (if the position of the horizon is known)
• view (camera) bearing (if North has been set or was already in the image)
• 35mm equivalent lens focal length of the view (if the source image is 360° or has a known 35mm-equivalent focal length).

Numerical values copied from the source image (if available):

• Aperture (f/ number)
• Shutter speed
• ISO sensitivity used
• EV (exposure value) bias
• Exposure program
• Whether flash was used
• Focal length (and 35mm equivalent)
• Geographical location (GPS latitude, longitude, and altitude)
• Bearing of the centre of the image
• Tilt of the centre of the image
• GPS time (UTC seconds since midnight)
• Lens details (minimum and maximum length and apertures)
• Exposure metering mode
• White balance
• Exif version.

String values copied from the source image (if available):

• Image description
• Copyright
• Artist
• GPS date (UTC)
• GPS datum (usually WGS-84)
• Camera/device make and model
• Lens make and model
• Software that wrote the image file
• Time that the image was originally captured (along with UTC sub-second digits).

360° XMP metadata (if available):

• Camera stance (direction, position, size, crop, etc., of the image)
• Initial view stance (stance of the initial presented view)
• Initial view zoom (saved as Camera Dolly)
• Projection type (always equirectangular) and viewer type (panorama).

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Other metadata could be added to this list in the future; let me know if there is anything specific that you need.