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Subject: Re: Attitude in EXIF?
From: JohnPW <johnpwatk...@gmail.com>
To: hugin and other free panoramic software <hugin-ptx@googlegroups.com>
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Yup.
Calibration makes up for any *stationary* interfering objects which is
why you can have a very accurate fixed compass on a ship or vehicle.
So the limitation Geoff points out is mostly a result of the sensor.
However, all the tripod and parts of the head are not "stationary"
relative to the panning camera. These parts also tend not to be
symmetrical and the actual sensor is unlikely to be at the npp (which
would be the center of symmetry.) Perhaps the effect is minimal
(depending on the rig?) or it could be that 5=BA is about as good as it
might get, without special attention to the design of the whole rig,
whatever the quality of the sensors.

On Dec 6, 9:37=A0am, Geoff G8DHE <geoff.mat...@gmail.com> wrote:
> > in terms of the compass.... i've noticed using my analog compass that i
> > can't hold it too close to my camera or it is wrong. so i wonder how an
> > electronic compass will be able to deal with that.
>
> You need to calibrate any form of compass ! =A0The Solmeta device require=
s
> that you put it in calibrate mode, and then twist the unit along all 3-ax=
is
> twice so that it can record the maximum external field strengths, by
> recording the changes rather than measuring the static fields created by
> the camera/head/device. =A0The accuracy and precision even after calibrat=
ion
> is not that high 5=B0 is good. =A0Unless you go for some very expensive s=
ensors.