The difference in the luminance is solely from the demosaicing process between DXO and LR. The comparison image shows the top part of the image with the two images side by side at 100%. I open both of them in Photoshop, then applied Topaz Denoise AI to the original RAW file with the default settings. I then copied those adjustments from the DXO file and applied them to original RAW. Minimal processing after using DXO Pure RAW. The scene was quite dark even with the moon as it was pretty low in the sky. Had to push the ISO that high to try to keep the shutter speed fast enough to avoid star trails and I had to stop down to f/5.6 to get enough DOF to keep the foreground rocks sharp and the distant mountains.

Moon was at about 1/4 full so the entire scene is lit by the moon. This is an image from 2017 taken at ISO 12800 on a Canon 5D Mark IV. I won’t go into all the workflow as you can easily find that on the web, but suffice it to say as a LightRoom user, it could not be easier. I decided to download the trial and see what all the buzz was about. I’m sure many of you have seen all the buzz about DXO Pure Raw in the past couple of weeks. I know this is not optimal to see at the size of the posted images, but thought it might be useful.

Dxo pure raw capture one