A temporary door was created by attaching a cut sheet of plywood to form part of a construction wall. The plywood used to have something attached to its painted surface. Whatever was attached, it was removed. The pattern left over on the door formed the letter F.

A twig was found relaxing on a trail beside a river. A letter F that had begun to twist and deform with age, perhaps one day becoming a truncated T.

A pole holding a sign, when cropped by the photograph's frame, resulted in the letter F.

One corner of a drain in the street. This drain was fairly clean because it had rained hard the previous day.

Tree branches made the letter "F" when viewed from the side. The problem with finding an F in nature is that the vertical seldom ends even with the top horizontal, and that the two horizontals seldom end on their own, thereby requiring the F to be defined by the frame of the photograph image.

Tree branches made the letter "F" when viewed from just the right angle. The problem with finding an F in nature is that the vertical seldom ends even with the top horizontal, and that the two horizontals seldom end on their own, thereby requiring the F to be defined by the frame of the photograph image.