I often go back and reprocess old images or even more recent ones that I think I can improve or make a different version of for Alamy. After watching this video I learned that there is another reason to turn your attention to older photos. I like to think my processing skills have improved and I know the software has gotten better. He talks about color rendering and demosaicing have improved for older cameras, He states towards the end of the video that Capture One and Lightroom have evolved over the years to give better results making it worthwhile to revisit those older images.