I took this night shot in the ancient ruins of Karnak in Egypt with a 16mm focal length. Angling the camera upward meant keystoning would occur, or the tilting inward of vertical lines. We have come to accept this with wide angle photography, but this is a distortion of the scene that I find to be somewhat unacceptable in many situations. So, I used Photoshop to correct it. This was the first time, though, that I incorporated 'generative fill' in the process. If I only used Edit > transform > distort to straighten the columns, I would lose some of their structure simply because I cropped the image tightly on either side. So, applied generative fill to expand the image both top and bottom as well as on either side. The artificial intelligence aspect of generative fill filled in the ruins such that when I straightened the columns, I didn't lose any of the important aspects of the picture. My settings were 1.3 seconds, f/3.5, and 1600 ISO.
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