For my astrophotography photos, I use the noise reduction capabilities of DxO Photolab. And I have seen a marked improvement with the introduction of Deepprime noise reduction in a previous version of Photolab. So I am curious to see if the new Deepprime XD gives an improvement over Deepprime.
In my opinion, there is definitely an improvement in noise reduction with Deepprime XD. And also the wide gamut color space helps with color reproduction.
The improvements are there, but only visible with a decent (manual) histogram stretch and zoomed in (cropped).
Here is a crop of an area of a nebula. The first image is the result of minimal processing in PL and without noise reduction.
As you can see the nebula is almost invisible due to the amount of noise.
In the following image, noise reduction with Deepprime (in PL5) was used
This is a distinct improvement!
Next, I tested the noise reduction with Deepprime XD in combination with wide gamut color space:
Less noise, more detail and more color.
I then stacked 90 different shots with this basic processing in PL with another program for further enhancement of the signal-to-noise ratio. Even then, a clear difference in the stack result can be seen between those with basic editing in PL with Deepprime and those with Deepprime XD.
Here is the result based on Deepprime:
And based on Deepprime XD:
All photos were processed in PL without the optical corrections such as vignetting and distortion. This is because of the artifacts these corrections cause, see:
and