and why somebody must argue about DNG as one of intermediate formats for some workflow ? unless somebody wants to use that for archival purposes w/o retaining the original in-camera raw as written by a camera's firmware.
Well I was working through my older files and some of them were uncompressed older MRW ones. I tried the lossless DNG and saved space and I could not detect any differences at all from the original raw files, so I converted them to DNG. On the lossy side of things, sometimes I don't really need the larger raw files out of camera. Lossy DNG seems like a good half way house, much small file sizes, hard to detect any real differences, and more flexible than jpeg for processing.
I have to admit I've never been a DNG fan from day 1 didn't see the point. With the increase in pixel density and accumulating more files over the years, I can see a place for it now. Of course a good clear out of shots you don't need also helps. But I'm quite impressed in the pixel peeping I've done it's really very difficult to tell the lossy DNG files from the original raw ones, noise pattern slightly different at very high magnification, not really much in it at all.