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Forum: Pentax K-1 & K-1 II
03-02-2019, 06:53 PM
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That 7-8 degree discrepancy sounds suspiciously like a declination issue -- that one of your devices is showing magnetic north and the other is showing geographic north.
The other issue is that the magnetic north pole has been moving quite quickly of late (about 50 km/year). If you aren't that far from the north pole (e.g. Sweden) and one of your devices has a declination map or file that's some year's old, the shift in the pole would would create this kind of error. (A quickie calculation suggests that a 5-year-old declination map might create about a 7° error for someone on the Arctic Circle in Sweden.)
P.S. The other open issue might be whether the magnetic inclination of the field (how much the magnetic field dips toward the earth) is causing some issues. I can't see how it would have an effect but it is another variable in the system, is quite high in high latitudes and is probably something that the little adjustment magnet could be messing with.
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