What do you think that is the most wonderful light for a photographer ? The blue or rush hour after the sunset or before the sunrise, when the sky is blue in contrast with yellow-orange tones of the artificial lighting ? The magic or golden hour around dawn or twilight ? Or what is know as transient light ?
Just for me, I have it clear, the transient light. It is a light that you suddenly find for example, when some sunrays are appearing across the clouds and you see how the rays are crossing the sky and proyect their light temporarily in a determinate zone on the ground, that as consequence is the focal point of your composition, ‘cos human eye tend to look for hightlights.
The following image from Marbella is a clear example of this light and the luck for a photographer. Before I did the photo-session, I was walking to this site with some rainy intervals and seeing in the distance how the sunrays were appearing and disappearing between the clouds.
I recommend you to read a book about light quality by Ian Cameron.
El Ancon Beach, Marbella (Spain)
Canon EOS 450D | Sigma 10-20mm f4-5.6 DC EX HSM @ 10 mm | f22, 1/6s, ISO 100. HDR from 3 exposures @ [-2 EV .. 0 ..+2 EV]