I'm not sure if this is a feature or what, but I find often enough after contemplation for some time that I like an alternative composition from my captured exposure. This often involves changing from (say) landscape to portrait orientation as well as cropping in tighter.

Perhaps its because I'm used to using a 35mm camera with a zoom, but at least twice now I've taken images with my 4x5 where I've started out with an image taken and then cropped off top and bottom to make it landscape (when it was portrait) or sliced off 2/3rds from one side and made a landscape out of a portrait orientation.

Perhaps its because I only have 2 lenses (180mm and 90mm) but luckily the negative has enough area (and the images were sharp enough) to cope with it.