As professional photographers, biologists and authors, Ann and Rob Simpson are noted national park experts having spent years involved with research and interpretation in the national parks. They have accumulated over 20,000 thousand stunning photographs of Sequoia and Kings Canyon National Parks including the world famous giant sequoias. Their photographic, educational, and biological expertise has proven to be a fantastic combination for leading "Canon Photography in the Parks" national park workshops for Canon and American Park Network.

Ann and Rob Simpson are well-known and highly sought after nature and wildlife photographers and writers. Long known for their stunning images of the natural world their work has been widely published in magazines such as National Geographic, Time Magazine, National Wildlife and Ranger Rick as well as many calendars, postcards and books including Birds of Shenandoah National Park. Their photography business, Simpson's Nature Photography, keeps their staff busy with photo requests from agents around the world. Their work can be seen at www.agpix.com/snphotos