Adobe offers a one month free trial of the newest version of its Lightroom editing software. I’m test driving it and the various features. One feature is HDR (high-dynamic-range imaging) in which multiple exposures are combined into one. The content is the same but the exposures differ from light to dark. This is one of two images I made late on Saturday using this technology. The view is of the Charles River and Back Bay taken from the roof of the Museum of Science’s parking garage.