I know Arnold supports Sun positioner, but that system does not support a custom image background and is not a workable solution for creating photomontages. I work in archviz and a correct sun position is crucial to my work - how do I get that with an Arnold sun?
Previously, I have taken data from a sun position table (like http://aa.usno.navy.mil/data/docs/AltAz.php) and entered the values into the Azimuth and Elevation parameters of the Arnold Physical Sky.
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