Subject: Re: Geotagging app
Alan Browne<firstname.lastname@example.org> wrote:
> On 2017-11-04 10:55, PeterN wrote:
> > On 11/3/2017 7:00 PM, Alan Browne wrote:
> >> On 2017-11-03 17:39, Alfred Molon wrote:
> >>> Caan anybody recommend an Android app which records position and
> >>> altitude, and later you can add that data to the exif of JPEGs and
> >>> RAWs?
> >> Any trail logger that saves (or exports) date in .kml, .kmz, .gpx,
> >> .log (NMEA sentences) should do the trick. But do check that it
> >> supports altitude, esp. NMEA files as many do not record altitude.
> >> Google Play is the source.
> >> This looks promising:
> >> https://play.google.com/store/apps/details?id=com.ilyabogdanovich.ge...
> >> r&hl=en
Available on Aptoide too:
> >> I use a German product called "Trails" on my iPhone - alas not
> >> available for Android.
> >>> I'm using O.I.Share for the E-M1 II but it doesn't record the
> >>> altitude.
> >> As a stopgap you could snap a photo with the Android camera and (if
> >> properly set) that data would be saved in the snap for later transfer
> >> to the other photos. (tedious).
> >> Pretty much any "trail logger" can be used for what you want to do and
> >> usually the "tagging" can be made automated in post process. You do
> >> need to know the offset from "real time" to your camera's time in
> >> order to do that - no big deal using exiftool. (ie: your time zone
> >> and the difference between "correct" time and the camera's time
> >> (unless you sync'd it all before going out).
> >> Important note: GPS altitude ≠ altitude above sea level of where you
> >> are as the GPS ellipsoid is not referenced to sea level.
> > I do it the easy way. I take a snap of the location with my iPhone. All
> > relevant information is recorded.
> That sounds like the hard way given what the OP wants to do.
> The OP's issue is automated tagging his Oly phots. Similar to me
> tagging my SLR phots. (Though I usually use an independent GPS recorder
> I can also use my iPhone for that).
> If you record GPS continuously then tagging any number of photos after
> the fact takes a minute to set up and a few seconds to execute using a
> tool like exiftool or any one of a variety of GUI based tools.
> exiftool -geotag=GPS_20171103_162238.log -overwrite_original_in_place
> -geosync=-4:00:00 *.dng
> (Just need to navigate to the folder containing the dng's before
> executing the command. I keep a "template" of the command in a text
> file so I just need to paste that into terminal, modify the gps file
> name and let 'er rip).
> Recording the position in a single shot is a fine backup, but pretty
> tedious if you have 50 - 100 photos to tag afterwards.