Here’s a sample image to illustrate my previous statement.
Just to give an overview of the scene, this is the DNG (scaled down):
This was taken with 100 ISO and f2.1.
Then two detail sections from this exposure …
First, from the out-of-camera JPEG (‘OOC JPEG’):
Second, from the DNG, developed in Lightroom (default settings, no tweaks) and stitched in Ricoh’s stitcher (AKA ‘processed DNG’):
Comparing the results shows:
- The size of the two images is slightly different:
OOC JPEG: 6720 x 3360
processed DNG: 7296 x 3648
- The OOC JPEG shows unnaturally saturated colors
- The OOC JPEG shows fewer details due to strong noise reduction and sharpening applied
This is all with default settings. The processed DNG can probably be further improved by fine-tuning the development.
Conclusion: If you want the best image quality, use the raw image data in the DNG file and an appropriate workflow!
(NB: What’s not visible from this sample are differences in the dynamic range. But, of course, the DNG is expected to win in this discipline as well …)