Improve your photographs of nature in this half-day workshop on Saturday, July 25 from 1 – 4:30 in the Hunnewell Building at the Arnold Arboretum, a talk followed by hands-on experience. Learn about composition, color, light, depth of field, and focus. Bring your camera and manual and familiarize yourself with the operation of your camera prior to the workshop. Level: beginner/advanced beginner. Class size: approximately 10. Rain date Sunday, July 25. Fee $60. The instructor is freelance photographer Erik Gehring, and on line registration may be found at http://www.arboretum.harvard.edu/education/adult-education/ Photo copyright Erik Gehring.