Ansel Adams: who is considered to be the grandfather of landscape photography, is known for focusing his photography on Landscapes and the “Wild Wild West”.  He also liked to take architect pictures. As far as anyone knows, all of Adams photographs are in Black and White.

Adams also published 24 books, including a best seller called Illustrated “Guide to Yosemite Valley.”

Elliot Porter: In contrast with Ansel Adams’ big Landscape style photography, Porter’s photos are considered to be more quite and focused more on Animals and Nature scenes. Most of his photos remind you of Postcard scenes from fall. Porter has influenced many other photographers, including Charlie Cramer and William Neill. Porter also wrote the book “Eliot Porter's southwest.”
In Comparison, both Artists love to take black and white photos.