I have quite a lot sets of CR2s shot with 5D Mark IV and TS-E 17mm f/4L. Each set contains 2 or 3 photos by shifting the lens at the same scene. I need to merge each set in Lightroom Panorama in order to create a super wide angle of view @ 17mm perspective. The file size of the output DNG is huge compared to the source file. For example, 2 x 35MB CR2 source files (6720x4480) become a 117MB DNG file (6738x5738) 3 x 38MB CR2 source files (6720x4480) become a 210MB DNG file (6582x8796) I can then output both DNG files to lossy compressed DNGs just under 20MB. My question is how I can easily merge to lossless DNG with reasonable file size? Lightroom and Photoshop do not seem to have lossless DNG compression.