Yes Charlie that is the way to put it! Weather was not perfect here today, there was some cloud, by any measure BUT it was constant and I could shoot in shirt sleeves and feel comfortable for four rounds with one set of lenses. To be fair though it cuts both ways during high summer I can have a day when the sky is so beautifully blue all day and I use my CMT lenses but the sweat is running out of me because it is 40C + and I HAVE to drink 3L of water just to stay upright! Its at those time I wish for a little bit of a cooling breeze and 10C less Mercury... but hey I'll suffer it