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Shadows are a very poor indicator of the source of lights' direction.
Fence posts are of course upright and parallel; depending upon the skills of the fencer. The shadows they cause should produce parallel shadows; they do. But observe the following images…
Many shadows on the lunar photographs seem to be a little odd. The light from the sun is so distant that all shadows should be parallel on earth and the moon. But many photographs taken on the moon clearly show shadows in various directions. This would be correct if spotlights were used instead. Aha! The astronauts were in a studio and not the moon.