LOL, you're absolutely right. The wavelengths don't change! The shorter ones don't make it through all that atmosphere late in the day or early in the morning.Agree, good find with LOTS of potential, and agree with the times of day recommeneded; strictly a technical nitpick, the wavelength of light doesn't change with the time of day, the reason for shooting with the sun low in the sky is because a softer light and gentler shadows are produced as a result of the sun's rays having to travel [effectively] a longer distance through the atmosphere.