Thursday, June 14, 2018
When you look at a scenic mountain photo typically everything in the distance is in sharp focus. But this scene might be even more captivating if something striking were in the foreground, perhaps a field of wild flowers in peak bloom. The problem is if the flowers are close to the lens relative to the mountains it鈥檚 impossible for all elements in the photo to be in perfect focus 鈥 if the flowers are sharp, the distant mountains will be blurry and vice versa.
鈥淭his limitation is determined by the physics of optics,鈥 explains听, a professor in the听David R. Cheriton School of Computer Science. 鈥淭he camera simply can鈥檛 take the picture you want, where everything is in focus, at least not in a single image.鈥