GPS on 5D4 --need a bit of advice?

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Greetings --
With some struggles, I have managed to get GPS working on my 5D4 ... But ... not invariably. My usual workflow is to shoot, then transfer GPS logger to my card (usually SD, in #2 slot) and load onto my computer. I open in Photo Mechanic, do my rapid cull, and then import to LR where I do my fine edit. The issue is this: some of my raw files (I check EXIF) have the GPS coordinates perfectly, and some don't.
The only possible explanation I can make of it is that IF I have turned the camera off, then on later, that it takes the camera's GPS a while to learn where it is. If I shoot a bunch in a single spot, all the GPS data work.
Could this be a function of turning the camera off and then on again? I have the GPS set on 1 minute refresh, though easily cold incrase it (I have lots of batteries.)
Thanks for your advice.

 

[privatebydesign]

Make sure you are in Mode 1, that way the camera will continue to try to acquire position data even when turned off. But even in that mode I often find the camera has lost position and it takes time to sort itself out. Canon say 30-60 seconds depending on location but it can often be more than that if you are inside etc.

 

[[email protected]]

Make sure you are in Mode 1, that way the camera will continue to try to acquire position data even when turned off. But even in that mode I often find the camera has lost position and it takes time to sort itself out. Canon say 30-60 seconds depending on location but it can often be more than that if you are inside etc.

Thank you. I will try that. That is what I think is going on, but will test and compare. Thanks again.

 

[[email protected]]

Thank you. I will try that. That is what I think is going on, but will test and compare. Thanks again.

Yup. You were right. All I need to do, if outdoors, is turn on the camera 30-60 seconds before shooting, and it learns where it is. Thanks again.