Thanks Wayne. The photos at GP were taken on July 4. GP was practically deserted. My friend came last week and reported at least couple of hundred people there. So we were very lucky with the cloud, color, and crowd. I guess being at the right place, right time, and right lens :-). I look forward to your photos with 180 APO 2.8 and other lenses. I am glad that I saved pennies for it and its 1.4x APO extender.