In my last post I mentioned geocoding digital photos with TopoFusion. I took quite a few pictures on my vacation, and had planned to post tracks with clickable geocoded photos. Imagine my surprise when on the first attempt, the photos showed up in the wrong places on the map. It took a moment before a light bulb went on in my head and I checked the clock on my digital camera, a Canon PowerShot A520
You see, my main GPS receiver can automatically switch to Daylight Savings Time, but I never checked the camera. Once I figured it out, I needed to come up with a solution. All my photos had a timestamp that was one hour off. I needed to edit the EXIF data.
Now I like free or low cost solutions (a common focus in my book, GPS Mapping – Make Your Own Maps), and while there are a number of tools out there for this purpose, I used the shareware version of Opanda’s Power EXIF to edit the photo timestamps. It was pretty easy to figure out, and it did the trick, as can be seen in this PhotoFusion page.
About Rich Owings
I did a bunch of geocoding of the pics I took on a recent trip to Alaska. I was able to use the “Adjust Timestamps” function of the free WWMX Location Stamper tool to sync up the times between my GPS and my camera. Thought I’d mention it since it’s a freebie that did the job nicely.
Take a look here for my results: http://tinyurl.com/7uk9n
Eric,
That’s very cool. Thanks for sharing!
If you’re partial to command line tools, there’s always jhead and exiftool. Using wildcards, you can process bunches of photos easily with a single command. There are versions of jhead for MS-Windows, Mac OSX, Linux, and pretty much any *nix system you’d care to compile the source on. Exiftool will work on any system with perl. I wrote about jhead and exiftool and how I’m using them in my blog: http://lookingabout.blogspot.com/2005/10/picture-is-worth-thousand-data-points.html