Come to the Dana Greenhouses at the Arnold Arboretum in Jamaica Plain on Saturday, May 14, from 8 – 11 in the morning, for a Nature Photography Workshop led by Erik Gehring, freelance photographer and multi-media producer.  Improve your photographs of nature in this half-day workshop – a talk followed by hands-on experience.  The class takes place at the Arnold Arboretum during one of the most beautiful times of the year.  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.  Offered with the Eliot School of Fine & Applied Art, the fee is $60, and there is a rain date of May 21.  To sign up, visit www.my.arboretum.harvard.edu.  And although the Erik Gehring photo below (www.northernwoodlands.org) is hardly a spring shot, it is so arresting we thought you should see it as an example of Mr. Gerhring’s talent.