Hi all, I'll be going on holiday in a few weeks to Croatia, with visits to Venice (Italy) and Lake Bled in Slovakia. I'll be taking my OMD EM5-II with a selection of lenses and would like to GPS tag all the images. I've done a bit of a first trial test of the OI Share app, and I think I've got the system for GPS tagging sorted (basically just start the app, click the "Add Geotag" to start logging, then when done, connect the phone and the camera together via wifi and it will ask if I want to Geotag the images). My question is what sort of strain does this put on battery life on the smartphone ? I have both an Iphone 6 and a Galaxy S5 available to take, but if my day trips last around 8-12 hours, will the phones battery cope with this i.e. does tagging in the app consume a lot of battery ? Will I get a full days shooting ?