I have some panorama images in my library and need to handle these differently than the regular images. Usually I color mark these manually, but now I have a rather large set of images and would like to mark them automatically based on dimension.
Is this possible to do with Lightroom. E.g. filter based on "larger than dimension" or aspect ratio?

Unfortunately, there does not appear to be a way to specify the dimensions as a search criterion. I'd be happy to be proved wrong, however.
– Oct 16 '12 at 16:12