My second group was treated to some heavy fog and wind while at the Gannetry on Bonaventure Island. Fog is often misunderstood by eager photographers; The histogram shifts everything right when properly exposed for the highlights, which results in an image without much contrast. Once captured properly, it is very much up to the photographer to make adjustments post-capture to reflect the intended artistic result: adjusting the black point to taste can result in an image that looked very much like the photographer saw it, or almost completely remove the fog by adjusting the black point.
Adobe Camera Raw histogram of the raw image above. Notice the distinct lack of any black point or shadow. It is imperative to record data all the way to the right of the histogram, with careful attention to not touch the right side which results in loss of details in the highlights.