GPS coordinates for CR3 RAW photos

Submitted by dwynn on Tue, 10/05/2021 - 08:20
Forums: 
Bug reports

I have a folder containing several geotagged CR3 photos taken with a Canon EOS M6 MarkII camera. In Windows 10, FastRawViewer 1.7.5 displays the SAME set of GPS coordinates for ALL the photos. Oddly, it displays DIFFERENT (correct) tagged Elevation values. Other software (Digital Photo Professonal 4, ACDSee Photo Studio Home 2021, and ExifToolGUI 5.16) all correctly display the GPS coordinates from these RAW photos.
 
The photos were taken from locations separated by 100-200 ft and therefore tenths of a second of arc. Is it possible that FastRawViewer rounds off the coordinates to a greater degree than the other programs and ends up with equal values?
 
Has anyone experienced this behavior with CR3 photos? Do you know if this has been corrected in FastRawViewer 2.0?
 
Note: The CR3 photos were not geotagged in camera. I used the GPS feature of Breeze Downloader Pro with a GPX track to create XMP sidecar files for the photos. Then I imported (embedded) the GPS coordinates from the XMP sidecars to the CR3 files using ExifTool. Finally, the XMP files were deleted before viewing the CR3 in FastRawViewer.

lexa

Tue, 10/05/2021 - 10:00

Could you please share some sample files for inspection?  Use Dropbox, Google Drive, WeTransfer/Free option and send link to support@fastrawviewer.com

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Alex Tutubalin/FastRawViewer team

dwynn

Wed, 10/06/2021 - 06:47

As it turned out, my above report of a "bug" was baseless. Unlike other software, FastRawViewer simply rounds off its display of GPS coordinates to the nearest second of arc, so relatively small displacements less than on the order of 100 ft may result in the display of apparently identical locations. Support has informed me this roundoff is by design and has provided reasons.
 
I found out that FastRawViewer actually does record GPS locations to higher precision than that displayed. Just click on the coordinates' live link in the EXIF panel. When Google Maps pops up, it shows both the location on a map and a display of FastRawViewer's coordinates to the nearest 0.1". Those coordinates are in exact agreement with the values displayed by other software.

lexa

Wed, 10/06/2021 - 11:25

We just implemented user-selectable arc-second precision in FRV 2.0.2 beta (build 1869): https://www.fastrawviewer.com/blog/FastRawViewer-2-0-2-Beta



It is tunable via EXIF Panel Gear menu - EXIF options - three separate selectable options for different precision setting.

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Alex Tutubalin/FastRawViewer team

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