I am working on bringing files into Lightroom 4, most DNG files from a Canon 5D and DNG and TIFF files from a Nikon scanner. The problem I'm having is that after importing the files into the Folder in which they will all be for the catalogue, they are significantly smaller. For instance, a DNG file from a 6x9 film scan is 600MB in the original folder, then is 420MB in the new folder after being renamed and imported into Lightoom. Similarly, a 20MB DNG file from my Canon 5D is 8MB after importantion. Also, the backup of the original that is made upon importantion, remains at its larger size on my external drive. I do not believe that I have anything set in Lightroom to do this, the only setting I've touched in the import process are renaming the file, placing a backup, and adding tags. I am not doing anything in the development dialogue box. Is there a reason that these files are so much smaller? I'm worried because 30% decline in the case of scans is a lot of data, as if the 70% decline in my Canon 5D file. Any ideas?
