PanGazer logo PanGazer – saving views

Introduction

Download PanGazer


Getting started

General settings

Saving views

Image location

Compass points

Enhancements


Making panoramic images

Command line options

The gnomonic projection

Thanks

PanGazer lets you save any view as an image file.

Unlike a screenshot, if the source image is a spherical or 360 panorama, the saved image includes data such as the effective lens focal length of the image, the camera tilt (pitch) and also – if set in the source image – the location and bearing of the view. Much additional data are also saved; see below.

Similarly, since the saved image has this information if you open it with PanGazer then any view of it can also be saved and will also carry the correct data.

Therefore, a ‘flat’ saved view contains the necessary geometrical data 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 can be overlaid on the image just as for the source image.

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

Saved data

PanGazer currently saves a number of values calculated by PanGazer and also a small number of values copied from the source Exif data (if any).

Numerical values calculated by PanGazer when a view is saved:

  • 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 data 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 © Mike Cowlishaw, 2014–2018, 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 2018-11-07 by mfc.