Gps for canon cameras

Reach Module / M+ / M2 Hardware integration
1

I am modifying a GPS, for Canon cameras, to use the GPS REACH instead of bringing this device. The question is that if I’m doing RTK, how accurate are the coordinates of the photo GeoTac compared with using the hotshoe shot.

2

How do you connect Reach to the canon camera ?

3

I use one GPS for canon camera,https://www.amazon.com/Marrex-Receiver-Digital-Cameras-LF475/dp/B00MFDNI7W
Modify it to use the reach , through the serial port the this.
If you are doing RTK , the photos are geotagged With this position