Just started to use the new version. The speed in SP6 is much faster when loading and viewing lots of thumbnails. Also the screens have been resigned to occupy less screen space. Elements like the histogram can now be quite small.
The NR algorithm has been updated to NR5.
Development / Output --- SILKYPIX Developer Studio Pro6 Special Site
I tried this on a difficult ISO12800 K-3 from
https://www.pentaxforums.com/forums/172-pentax-k-3/253942-pentax-k-3-high-iso-test.html
You can directly download Stagnant's PEF file which was used in this raw develolper comparison:
https://drive.google.com/file/d/0B8INe0_VKyQ8Z3ppNXhsaWpGVjQ/edit?usp=sharing
Here is a 100% crop comparison of the same region processed using the Default taste which adjusts SP's default processing settings based on the Exif data:
NR5 is claimed to do a better job than NR3 (SP5), amongst other things in preserving outline sharpness, but I prefer SP5 here. The definitive test would be to print out the whole image, not a 100% crop and see which version looked better. Even after moving off the default NR settings that SP6 chose for this image, I as unable to get as smooth a result as SP5 achieved.
Both HDR & Dodge now have a Colour Burn option which looked promising when I applied it to a strongly back-lit image
Development / Output --- SILKYPIX Developer Studio Pro6 Special Site
Dan.