PanGazer logo PanGazer – saving views


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Setting North

Saving views

Saving images

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Image geography

Show image location



Aspect ratio

Making panoramic images

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Command line options

The gnomonic projection


PanGazer lets you save a view as an image file. To do this, select the Snapshot current view ... menu item from the View menu or from the pop-up menu (or press the s key).

Unlike a screenshot, the saved view (snapshot) can include metadata such as the effective lens focal length of the image, the camera tilt (pitch), and the location and bearing of the view. See below and also the Image Geography page for details.

Similarly, since the saved image has this information if you then open it with PanGazer then any view of that image can also be saved and will also correctly propagate the metadata.

Therefore, a ‘flat’ saved view contains the necessary geometrical metadata so that (for example) moving the cursor over the image can show the bearing and tilt of the ‘camera’ at that point, and compass points and tilt angles can be overlaid on the image just as for the source image.

Views are saved as JPEG images so the focal length, location, tilt, bearing, etc. can be saved in the Exchangeable image file (Exif) metadata included with the image itself.


Saved metadata

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

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)
  • 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
  • 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)
  • GPS horizontal positioning error.

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

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

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

PanGazer and these web pages were written by Mike Cowlishaw; Please send me any corrections, suggestions, etc.
All content Copyright © Mike Cowlishaw, 2014–2020, except where marked otherwise. All rights reserved. The pages here, and the PanGazer program, are for non-commercial use only.
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This page was last updated on 2020-01-31 by mfc.