Here's an oldie but still relevant regarding Zero Noise:
https://photography-on-the.net/forum/showthread.php?t=775795
Here's an older thread with some ZN examples:
https://photography-on-the.net/forum/showthread.php?t=765354
And have a look through this thread:
https://photography-on-the.net …ghlight=zero+noise&page=2
I know Guillermo's goal, at one time, was to develop a ZN version that wrote to DNG, butI'm not sure how that plan may or may not have changed. I really like Zero Noise and, after brute forcing my way through the earlier versions, Guillermo helped me with the concept, the workflow and the output processing. One thing that is really important is understanding what Zero Noise produces as output. It is a 16 bit tiff, but the pixel values are scaled in lightness to the darkest exposure in the image set that you feed into it. Thus, the output always looks really dark and people sometimes get confused and give up. However, the file it produces can be heavily manipulated in PS and pushing the shadow tones up into the mid to three quarter tones is perfectly expected, and noise is not an issue - the exact intent of the approach.
There is an application that does a few different computational imaging things, like super-resolution, focus stacking and dynamic range extension - the application is called PhotoAcute studio:
http://www.photoacute.com/
You can merge several exposures akin to HDR merge and export the file as a DNG, yielding better DR and less noise in the shadow tones, and ready for processing in your raw workflow of choice. Noise is also reduced in this approach, by replacing the noisy underexposed pixels with the well exposed pixels in the higher exposures.
Kirk