On our walk yesterday afternoon I took a few bracketed photographs +-1 to see if the HDR result would bring out the cloud formations.
Some of the clouds in the first photo really did look as though they had been painted out of focus on the blue sky. Cannot say I have ever noticed this sort of formation in the past.
Two different processes on the same group of photos here.
Finally not HDR but a panorama made with six hand held photos. Pity the sky was so washed out.
On a larger view on Flickr towards the right you can see the spire of Louth parish church standing well above the valley and towards the left is Belmont TV mast standing on top of the Lincolnshire Wolds.
HDR processing done with Photomatrix Pro v3.2 and the panorama stitched using Serif Panorama Plus v2. Photos taken with the Lumix TZ7.