Sometimes an interesting image can be obtained by deliberately moving the camera during the exposure. Another way to introduce motion (used here) is to apply the Photoshop motion blur filter to an otherwise sharp image. The original photo of the trees was taken with a Nikon D600 and a Nikkor 50 mm, f/1.8 lens. The exposure was f/8 and 1/500 sec (ISO 3200). A strong 90-degree directed blur was introduced in subsequent processing.