A lone thistle plant, dried and decaying, stands in a field of goldenrod still in brilliant color. Isolation of subject and extremely shallow depth of field obtained with a 500 mm F 4.0 super telephoto
lens shot at a wide aperture. Canon 40D, 500 mm F 4.0 L lens. ISO 500, 1/250 sec @ F 4.5. Image by Timothy Van Minnick