I was wondering if you are Preview and go into a two-up mode, is there any keyboard shortcut that would allow you to sync the side-by-side images? I know you can use L to lock two images and pan synchronously. But if you have two images up, it would be really useful if you could just click on one and have the two images and they were synced on the same location and zoom level.
If this isn't an existing feature, please put this on the request list.
Thanks for a great product,
David McCormick