In reply to Andy Johnson:
Just a small point to consider with gps on cameras in my limited experience using an Olympus Tough - start up time was extended considerably to allow for an accurate gps fix such that it was not worthwhile waiting for it for a quick grab a shot type of photography. It was far slower than the likes of navigation gps units. There was also a heavier drain on battery esp if you left it on.
I switched the gps off with my Tough for all photography because it was so slow especially the initial fix in a new area. It was of course a bit quicker after it got it’s initial fix, but was still slow after when the camera had been switched off in between shots whilst walking a route. The camera would need to remain on to keep the fix and be quick.
There is some merit in having an app for example linked to the camera if you want geotagging of photos without taking the time hanging about. Olympus can do this for their non gps cameras. The geotagging with Olympus is I believe done at download stage and not during the taking of the photos.
Others will know if other makes of camera with gps are similar or quicker.
Post edited at 21:00