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I would like to have the ability to change the image order of a folder just by moving them around in the contact sheet viewer. I often shoot a variety of image subjects from one viewpoint. Viewing them based on capture time is a really nice feature but can cause non-similar images to be in alternating order. It would be nice to first view the images based on capture time and then to be able to rearrange them with drag-and-drop to a custom file order before renaming the files for cataloguing.