@arvindppixls.us mentions some very solid points when it comes to having such a pp3 repository.
@dellaaa It is worth looking at the pp3s that Ingo linked to. Do be careful with the dcp files though, they will probably not fit your camera profile. @The_Squirrel_Mafia does have the correct approach in my opinion: Build your own set of pp3s which are tailored to your camera(s)(+lenses) combos.
This is especially true for noise reduction. I started working on a set, they are still in the development/tuning stage and for my Z 6ii but maybe they are helpful, so here they are:
iso.1600.pp3 (701 Bytes)
iso.3200.pp3 (865 Bytes)
iso.4500.pp3 (700 Bytes)
iso.6400.pp3 (679 Bytes)
iso.9000.pp3 (681 Bytes)
iso.12800.pp3 (685 Bytes)
iso.18000.pp3 (560 Bytes)
iso.25600.pp3 (560 Bytes)
iso.36000.pp3 (558 Bytes)
iso.51200.pp3 (776 Bytes)
These influence Demosaicing, Capture Sharpening, Sharpening, Impulse Noise Reduction and Noise Reduction and are supposed to become a solid, auto applied base from which to continue (think: fine tuning and specifically targeted denoiseing using Local Adjustments → Blur/Grain & Denoise → Denoise).
I mentioned Play Raw in a previous reply as a general source for pp3s. Although in general people share nice images to play with, often times people ask help concerning specific issues and it pays to check those out.
The following are a few examples of solutions to some of those issues. These examples are mine and were appreciated by the community, do check for other pp3s as well:
- Noise Reduction
Looking at the other topics might also be worth it:
Do remember one of the things that @arvindppixls.us said in an earlier reply, which is very true:
Given the extreme variations in picture situations, conditions, equipment and personal tastes the use might be limited […]
EDIT: Updated the base noise profiles.