Sunrise/sunset photos depend to some extent on clouds and atmospheric interference for their emotional impact.  The best clouds are high sheets (cirrus clouds) with distinct patterns and textures; the sun often breaks below them as it sets (for instance,) its light traveling a maximum distance through the atmosphere before reaching our eyes, filtering out many of the shorter wavelengths and leaving a preponderance of red light to bounce between earth and clouds and give the view its glory.  761 more words