@kvbarkley wrote:
High Dynamic Range. You take multiple images at different exposures and combine them so that you get more dynamic range in the image than the sensor can provide. For example, If you take a picture in a typical room with a window, you can either expose for the room or the window, but not both. With HDR, you can take a shot exposed for the room and combine it with a shot exposed for the window and get an image where the room and the window are exposed properly.
Right. My shot of the tall lighthouse is a perfect example. The sun was at right angle [to my left as I took the picture] to my shooting direction, which left the side facing me in shadow. As a result, the lighthouse surface looks dark, and that is after being brightened up a bit in Photoshop.
I took three separate exposures. One at normal exposure, one that was underexposed, and one that was overexposed. This last exposure captured the surface of the light house quite a bit brighter than the original, single exposure. The underexposure helped to correct the color of the sky, which was saturated in the single exposure. The images were combined, and then further processed in Photoshop to balance out the colors as I had remembered them.
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