Adobe Lightroom 4.1 and above now support file transfers from Photoshop’s Merge-to-HDR Pro in a 32 bit TIFF format. This allows exposure-bracketed 12 bit RAW files to be selected in LR, automatically sent to PS for merge and saved to the catalog as 32 bit TIFFs. The resulting 32 bit images can be edited in LR with up to +/- 10 stops of exposure adjustment range. The presentation gives detailed steps to implement and examples. (Click image to open presentation).