Learn to take park photos from the pros

— -- Canon cameras will host free photo workshops this summer at four national parks, including use of cameras and in-the-field instruction from professional photographers.

Two field sessions daily at Yosemite (much of June), Grand Canyon (most of July), Yellowstone and Acadia national parks (one week each in August) are aimed at both beginning and more advanced photographers. A third evening session will take place indoors. Day-of-workshop registration is at the parks and limited to 35 participants a session. Information: usa.canon.com/parks.