Issue with merging GeoTag data w/Photo

Was wondering if anyone has run into this issue. I am using a Garmin V GPS to capture my track. I transfer the track to MapSource and save the file in the .gpx format. I have used Microsoft Photo and GPSSync to attempt merging the location information into the photo only to find that the location is not correct. The date/time of the GPS and the Camera are matched to within one minute. What I have discovered is that the location information in MapSource is not the same information saved to the .gpx file. MapSource appears to have the data in degrees and minutes and the .gpx file has it as longitude and latitude. I have looked over a lot of settings but can't seem to come to a conclusion. Any idea's is greatly appreciated...

Thanks,

Tom

Not sure what you mean when you say that Mapsource has data in degrees and minutes and .gpx file has it in lat and long, because degrees and minutes are one way of measuring lat and long.

Are you getting any error messages when trying to attach the gps data to your photos when using GPSync?

I found that whilst my GPS and camera were showing the same time, photos were being logged to the wrong location. I subsequently discovered I need to readjust the UTC time in GPSync during tagging to get the photos logged to the correct location.

Thank you for responding. Below is an example of the data. I may be explaining it incorrectly.

This is how Mapsource displays the location
"1 8/23/2008 3:09:54 PM 352 ft 4 ft 0:00:01 3 mph 286° true N41.39109 W73.19053"

This is what is displayed in the .gpx file,
<trkpt lat="41.391093" lon="-73.190532">
<ele>107.324341</ele>
<time>2008-08-23T19:09:54Z</time>
</trkpt>

If I take what is in the .gpx file, it maps to a different location.

I also noticed that I need to adjust the time after receiving multiple errors. But even with the time adjusted, it is still not correct.

tmwhitm wrote in post #6214148
Thank you for responding. Below is an example of the data. I may be explaining it incorrectly.

This is how Mapsource displays the location
"1 8/23/2008 3:09:54 PM 352 ft 4 ft 0:00:01 3 mph 286° true N41.39109 W73.19053"

This is what is displayed in the .gpx file,
<trkpt lat="41.391093" lon="-73.190532">
<ele>107.324341</ele>
<time>2008-08-23T19:09:54Z</time>
</trkpt>

If I take what is in the .gpx file, it maps to a different location.

Hi,

They should be the same.

N41.39109 is Latitude 41.39109 degrees North
W73.19053 is longitude -73.190532 East (or 73.190532 degrees West).

They are also decimal figures not Degrees, Minutes and Seconds.

Yup, both have the same data, location in decimal degrees with more accuracy than a Garmin V is even capable of. 4 or 5 decimal places is more like it.

Latitude is how far north or south you are. Longitude is how far east or west you are. Negative in this case because you are west.

Rather than over analyzing how the systems describe their data, have you actually looked on a map to see if it is in the right place? That would really let you know if you have an issue.

According to the information you have given, those co-ordinates show that the photograph was taken as shown on the attached image. If this isn't where the photo was taken from, I would suggest that there is still a discrepancy between the times on your camera and your GPS.

HTTP response: 404 | MIME changed to 'text/html' | Byte size: ZERO

It is strange because that is not where the photo was taken. It was actually taken about 10 miles north east of this location. I did check these coordinates on google maps to confirm. Is the 'Z' next to the time in the .gpx file Zulu time? Would the offset have to be more than -5 for US Eastern?

It would be a fair assumption that the Z stood for Zulu time i.e. GMT, and that you will need to allow for the offset if your camera is set to a different time zone.

If US Eastern is GMT -5, perhaps you can re-tag your photos with that offset dialled in to your Geotagging software, and see what co-ordinates are then attached to your photos.

tmwhitm wrote in post #6215354
It is strange because that is not where the photo was taken. It was actually taken about 10 miles north east of this location. I did check these coordinates on google maps to confirm. Is the 'Z' next to the time in the .gpx file Zulu time? Would the offset have to be more than -5 for US Eastern?

But you must have been there at some point for your GPS to have that location. If you can look at all the locations and figure out what time the GPS thinks it was and what time your camera thinks you should be able to see what the time offset should be.

Thank you all. I believe I understand the problem. Eastern Standard Time is -5 hours from UTC but during Daylight savings it is only -4 hours. When I saved the track in the .gpx format, 3:09:54 PM, 15:09 military time, was saved as 19:09Z time. I was looking for 5 hours to be added to the local time, not 4. When I set the UTC offset in the GPSSync software to -4, the photos are geotag very accurately. All of our clocks are set to manage this difference so I didn't give it much thought. If you are curious, there is a table at the bottom of this link that shows the offsets.
http://www.dxing.com/u​tcgmt.htm
Thanks again for everyone's input. It's always little details that bite you...

Doh!

It was the time offset! I was so intent on the co-ordinates that I didn't think of the time.

That, I suppose, is where the UK is lucky just being in one time zone.

Glad it's sorted.

Nanscombe wrote in post #6217810
Doh!

It was the time offset! I was so intent on the co-ordinates that I didn't think of the time.

That, I suppose, is where the UK is lucky just being in one time zone.

Glad it's sorted.

Actually we're not - we have daylight saving too, which means that in summer months if I want to Geotag my photos I have to set the time offset in my tagging software to 1 hour.

Sorarse wrote in post #6225491
Actually we're not - we have daylight saving too, which means that in summer months if I want to Geotag my photos I have to set the time offset in my tagging software to 1 hour.

The whole of the UK is shares the same time which changes between BST (British Summer Time) and GMT (Greenwich Mean Time) twice a year.

I just adjust my camera clock(s) along with all of the rest of my clocks.

My GPS and computer adjust themselves automatically.