Magic Cloth Ice Beach :: Video
Study the ice form
It can be worthwhile to take some time to move around the ice to study the way the light changes. It changes again when a wave washes the black sand. The white background shows a completely different form of the ice compared with a black sand base. This not only changes the appearance of the glacier ice, but your exposure can vary greatly. The light interacting with the ice is a mixture of reflection and refraction. Darker ice reflects well and crystal ice refracts well. Care must be taken when studying up close, it is easy to be caught by surprise by a rogue wave.
I am using TV mode (shutter mode) with +2 stops compensation. I have set the shutter to 4 seconds for a very simple Magic Cloth movement. As soon as the shutter opens, I lower the cloth over the lens. Then slowly up to the horizon and working the area below for the remaining seconds.