Many of the creative options available to a photographer hinge on an in-depth understanding of lenses. Foundations of Photography: Lenses, will give you that in-depth understanding, as you learn how to choose lenses and take full advantage of their creative options. This 2.5 hour course covers fundamental concepts that apply to any camera, such as focal length and camera position, and shows how to evaluate and shop for DSLR lenses. The second half of the course focuses on shooting techniques: controlling autofocus, working with different focal lengths, and managing distortion and flare. You’ll also learn about filters, cleaning, maintenance, and more. You can find it all right here on the Lynda.com web site.