Metadata Needs TWO GPS Entry Fields instead of only One

I am not savvy enough to devise this on my own; so, I wish someone who knew how would.

Image file metadata needs two GPS fields, instead of the single one that is available.

There needs to be a place to enter the camera's location at time of capture AND a place to list the subjects location.

Often, I may be set up on a ridge and photographing things across two hollers or down in a valley; it would be nice to be able to record BOTH sets of coordinates, vantage point and subject.

One field for Latitude, a second field for Longitude

BuckSkin wrote in post #19303139
I am not savvy enough to devise this on my own; so, I wish someone who knew how would.

Image file metadata needs two GPS fields, instead of the single one that is available.

There needs to be a place to enter the camera's location at time of capture AND a place to list the subjects location.

Often, I may be set up on a ridge and photographing things across two hollers or down in a valley; it would be nice to be able to record BOTH sets of coordinates, vantage point and subject.

Interesting. I've spent a fair amount of time zooming through Google maps in satellite view tracing the topography between the camera location and where the subject might have been, over there, across the river somewhere. It can be hard.

I suppose the technology might be there to compute the subject location. I'm thinking you'd need a distance and a compass reading. Problem is, I don't think I've ever seen a compass reading in exif data, and if your lens thinks the distance to Holler 2 is infinite, that might screw up your equation.

Good idea, though.

Edit. Just reread your query
I'll leave the rest intact
You could cut and paste the "subject" position into a new column named something appropriate "location" leaving the "camera" column intact or renaming.

Is the one available a comma delimited one?
41.2354,145.4567
Thats the latitude and longitude in one field. You probably know all that
Are you expecting to have them in individual unique fields?

If all the metadata was extracted and opened as a csv file for egs the latitudes and longitudes would appear in separate fields if the other data was comma delimited on export.
If tab delimited you could edit out the comma and make it a tab then all would fall in individual fields.

Not really sure what you're after.

avondale87 wrote in post #19303238
Not really sure what you're after.

Just about every program that displays metadata only supports one GPS position; or, maybe I should say, only has provision to display a single position; position being Latitude, Longitude, and Elevation of one spot.

I can enter coordinates for anywhere on earth, but only for a single spot.

Often, it would be nice to be able to document and display both positions, camera position and subject location, and in a way that most all programs would display it and ordinary strangers would know exactly what is being presented.

Using ExifToolGUI, I created some extra fields; but then those fields were ignored even by ExifToolGUI once I saved them to the metadata and no other program I tried acknowledged their existence either.

I'm not familiar with camera metadata. In my world of work such is a piece of cake.
Your requirements would not be unique, nor difficult to implement by the software manufacturers IF they saw a need

drsilver wrote in post #19303236
Interesting. I've spent a fair amount of time zooming through Google maps in satellite view tracing the topography between the camera location and where the subject might have been, over there, across the river somewhere. It can be hard.

I suppose the technology might be there to compute the subject location. I'm thinking you'd need a distance and a compass reading. Problem is, I don't think I've ever seen a compass reading in exif data, and if your lens thinks the distance to Holler 2 is infinite, that might screw up your equation.

Good idea, though.

You are close to understanding what I am describing and I should have explained a bit further in my initial post.

I don't so much need a means of finding the coordinates of the subject, as in most cases, I can go right to it in Google Earth Pro and get the coordinates.

What I am wishing for is separate defined fields in the metadata to enter both locations, camera and subject.

While everything is still fresh in my head, I can pinpoint my subject's location; but, a few years later, it would be nice to just open Properties, click the Subject GPS field, and Google Earth Pro come to life and zoom in on the coordinates just like it already does for the ones established by the camera.

Wilt wrote in post #19303230
One field for Latitude, a second field for Longitude

No, that's not what he wants.

drsilver wrote in post #19303236
Interesting. I've spent a fair amount of time zooming through Google maps in satellite view tracing the topography between the camera location and where the subject might have been, over there, across the river somewhere. It can be hard.

I suppose the technology might be there to compute the subject location. I'm thinking you'd need a distance and a compass reading. Problem is, I don't think I've ever seen a compass reading in exif data, and if your lens thinks the distance to Holler 2 is infinite, that might screw up your equation.

Good idea, though.

7D2 has a compass built in, other cameras do as well

BuckSkin wrote in post #19303259
You are close to understanding what I am describing and I should have explained a bit further in my initial post.

I don't so much need a means of finding the coordinates of the subject, as in most cases, I can go right to it in Google Earth Pro and get the coordinates.

What I am wishing for is separate defined fields in the metadata to enter both locations, camera and subject.

While everything is still fresh in my head, I can pinpoint my subject's location; but, a few years later, it would be nice to just open Properties, click the Subject GPS field, and Google Earth Pro come to life and zoom in on the coordinates just like it already does for the ones established by the camera.

There's usually a comment field that you can use for whatever purpose that you wish.

BuckSkin wrote in post #19303139
I am not savvy enough to devise this on my own; so, I wish someone who knew how would.

Image file metadata needs two GPS fields, instead of the single one that is available.

There needs to be a place to enter the camera's location at time of capture AND a place to list the subjects location.

Often, I may be set up on a ridge and photographing things across two hollers or down in a valley; it would be nice to be able to record BOTH sets of coordinates, vantage point and subject.

Your camera knows where it is; given the fact that 'subject' could be 10' away or 100' away or 1000' away, in any compass direction, how do YOU know what data to enter for subject location?!
While a camera may have a compass for relative heading, it is of little value in placement of photo on a map, because the magnetic deviation from true North is variable, based upon actual location of the compass.

Wilt wrote in post #19303990
Your camera knows where it is; given the fact that 'subject' could be 10' away or 100' away or 1000' away, in any compass direction, how do YOU know what data to enter for subject location?!
While a camera may have a compass for relative heading, it is of little value in placement of photo on a map, because the magnetic deviation from true North is variable, based upon actual location of the compass.

Because I can look right at it in Google Earth Pro; put my mouse pointer on it; and, read the coordinates.

Wilt wrote in post #19303990
Your camera knows where it is; given the fact that 'subject' could be 10' away or 100' away or 1000' away, in any compass direction, how do YOU know what data to enter for subject location?!
While a camera may have a compass for relative heading, it is of little value in placement of photo on a map, because the magnetic deviation from true North is variable, based upon actual location of the compass.

Your information isn't quite correct on many systems, because the magnetic variation is known and stored in a computer memory. As you know your location from the GPS, the system can compensate for magnetic variation to give a bearing based on true north.

Here's an example for a boat compass:
"Inexpensive heading sensor with the highest accuracy and stability in this class of equipment Automatic correction for local magnetic variation with an appropriate GPS navigator"
Ref: https://pdf.nauticexpo​.com …o/compass/21522​-2484.html

New phone apps generally default to true north unless you tell them otherwise.
Here's the Android API call to get the declination and other data at a given point on earth:
https://developer.andr​oid.com …hardware/Geomag​neticField

I think all the tools are there to calculate subject location on the fly.

GPS - gives the camera location
Compass - Gives angle from magnetic north. Using the declination factor for the GPS location, conversion to map north is simple.
Rangefinder - AKA focal distance. This is the weak link. Infinity and beyond would cause problems.
Inclinometer - Comes with your electronic level. Up and down makes a trigonometrical difference.

It's been a long time since I did any trig, but this doesn't sound too hard.

drsilver wrote in post #19304024
I think all the tools are there to calculate subject location on the fly.

GPS - gives the camera location
Compass - Gives angle from magnetic north. Using the declination factor for the GPS location, conversion to map north is simple.
Rangefinder - AKA focal distance. This is the weak link. Infinity and beyond would cause problems.
Inclinometer - Comes with your electronic level. Up and down makes a trigonometrical difference.

It's been a long time since I did any trig, but this doesn't sound too hard.

So, theoretically, this could be done in-camera; that would be cool.

All I was hoping for was separate fields in software so that I could manually enter the subject's coordinates.