These are the exact clouds I like to have in my photos. Big, white and fluffy. The HDR process usually makes them more great, but that’s one of the first things I always correct. I usually just take the +1Ev exposure and blend them from it.

This is a HDR from 5 exposures, created in Oloneo Photoengine, finished in Photoshop.
Fluffy clouds over Alps

Subscribe to my newsletter and get a free Capturing fireworks ebook.