How do I use lightroom to catalog my psb files along with the originals? I just stitched together a modest panorama and did a few adjustment layers in PS. I had to save as a psb file since the file size was over 2gb. I can't find my file now in lightroom. Please help. Thanks.
I don't think Lightroom can work with .psb files
Save it as a TIF file, not PSD, as this will allow you to go bigger than 2Gb.
TIFFs are a good way to get larger than 2 GB, but they have a maximum size of 4 GB. A number of others have asked for the ability for LR to work with PSBs -- please add your vote and opinion to this topic in the official Adobe feedback forum: Lightroom: Support cataloging psb files.