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ExifTag.GPSLatitudeRef gets resolved to ExifTagValue.InteroperabilityIndex #1992
Description
Activity
Both
ExifTagValue.InteroperabilityIndexandExifTagValue.GPSLatitudeRefhave the same value and it looks like the first value is displayed when the metadata is displayed so this is not an issue. I do wonder if we should remove the ExifTagValue.InteroperabilityIndex value @JimBobSquarePants.After doing a quick search in Magick.NET it looks like InteroperabilityIndex is not included in ExifTagValue, removing it looks reasonable.
Removing the value prevents us ever supporting the tag.
ExifTagValueshould actually be 3 different enums.https://www.awaresystems.be/imaging/tiff/tifftags/privateifd/interoperability.html
I came here to make a similar report, and found this issue already open. @dlemstra's comment is not true for me:
ExifTagValue.InteroperabilityIndexhas the value that I would expect to find inExifTagValue.GPSLatitudeRef, andExifTagValue.GPSLatitudeRefhas no value at all.We should split up the enum for V3.
This never made V3 but we should target V4 for this.
I've been re-reviewing this and I don't see now why we cannot remove the tag entry. It's not used anywhere.
I'll also backport the fix for V3.
- linked a pull request that will close this issueV3: Remove ExifTagValue.InteroperabilityIndex #2939
on Jun 6, 2025
Prerequisites
DEBUGandRELEASEmodeDescription
ExifTag.GPSLatitudeRef when converted to string is resolved as "InteroperabilityIndex"
Steps to Reproduce
System Configuration
Packages:
Environment (Operating system, version and so on):
.NET Framework version: .Net 6.0