It is roughly noon and the sunlight is filtered by a thing layer of clouds. Do I shoot with Auto ISO or not. Actually, I find that Auto ISO tends to have my pictures overexposed. My strong suite if full manual. The decision of course has to take place in an instant as a hummingbird never stays long in one spot. In this lighting a little more than the last, you see mostly shades of green and not the blues in her plumage. She is beautiful nonetheless.