Depth of field (DoF) is the range of distance in a photograph that appears acceptably sharp, from the nearest to the farthest in-focus objects, controlled by aperture, focal length, allowing photographers to create shallow DoF (blurry background for subject isolation)
The UVL rays cause damage to our skin cells, increasing the risk of skin aging and skin cancer. Using sunscreen is critical to protect the skin cells from this damage. This includes cloudy days when up to 80% of the UVL rays will pass through the clouds.
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