I went to see this exhibition and I was blown away. I had seen many of his prints in books and calendars and couldn't really appreciate what he was all about. It's when you stand in front of an Ansel Adams and put your nose up against the photo that you see just how good he was. I was severely humbled and in awe of his work. I remain convinced that he was in fact a master painter and an expert with an airbrush. I just don't see how it's possible that a human can do that with paper, silver and light.
The shades and tones that he was able to print blew me away.
There was a discussion going on here recently about what focus is and people were saying that an Adams print is boring as everything is in focus. I retract what I said in that thread. You need to see an Adams print to appreciate how beautiful and impressive sharpness can be.
If you have the opportunity to see the exhibition, go.