hi, this took me some time...
Code
<krpano>
<preview type="grid()"/>
<hotspot name="origin" url="circle.png" tx="0" ty="0" tz="0" />
<view hlookat="90" tx="-1000" ty="0" tz="0" />
</krpano>
while the view having tz=0 is in the center of the grid box,
the hotspot is not ! it is on the left side ...
see image: https://imgur.com/a/WrSDKle
after some experiments i figured out that this is because
depth defaults to 1000 and gets added to tz !
Klaus ...
is it correct that depth is a simple offset to tz?
shouldn't it get ignored as soon as 3d coordinates (tx/ty/tz) are used?