Do you remember the special kind if film they gave in Science center in preparation of the Sun solstice? It was as protection for the eyes of people who wanted to watch the event. It doesn't matter whether human eye or camera: never point it to the sun without protection. It does not apply to times of sunset and sunrise. Here the intensity of the sun is lower and most people will use additional filters (GND, ND) anyway.I was told that not to point my lense in to the sun.. but didnt really know why.. So does any one know the reason...??
Unless you try a portrait at mid day from bottom up against the sun there's not much precaution required. As mentioned: low sun during sunset / sunrise is no problem.for those who like shooting portraits against sunlight, what's suggested precaution to take?