You center a lens to get better resolution and to open up the whole image
True. Indirect sunlight does not directly pose any danger to the skin. This is because exposure is less and the heat that is generated from the sun does not penetrate other layers of the skin. But over a long period of time, this can indirectly affect the body that is why there are a lot of skin protecting products available in the market.
Physical health because your eating habit or where your living could greatly influence how your physical well being is.
