Phone camera procedure: Cave entrances
+Phone camera procedure: Cave entrances
+We have a separate page specifically on recording cave entrances by GPS in the survey handbook. + -
Even if you have no intention of using your location or recording a track, the camera in your phone will record locations of your photos which are extremely useful to future expeditions - for reasons which only become apparent when you yourself try to work out what someione did 10 years previously.
- 
on the track!
Your camera will use the same location settings as the rest of your phone, but sometimes with a bit of a delay. We have lots of examples of geo-located photos where the recorded location is alctually the location of the previous photo because someone has taken a quick photo but the phone hasn't had time after waking up to get a location, so it uses the previous one! And doesn't tell you!! - -
So when taking a photo of an entrance, always take one photo; delete it, and take another. This will give your phone a chance to get synchronised properly. - -
ALSO: always take 3 photos of any entrance, the obvious one about 10m away, a scene-setting one from 20 or 30m away, but also a really close one of 3 to 5m away, so that we can see if rocks have moved around the entrance and also for a much better identification in future. If there is a tag, always take a close-up photograph of it so that the letters are readable.
@@ -101,4 +94,5 @@ Go on to Next survey guide page - 'Base Camp: getting
Your phone on expo - Do not select the "high accuracy" location setting on your phone
GPS essentials on the plateau - Safety information
-Photo GPS - Is unreliable unless you follow procedure