Still learning new things. Got frisky and did two VERY large renders just for fun to see what would happen. Then tried the denoiser on both of them (first time using it). Then had to reduce the images to be able to post them here (they are still large though). I do large(er) renders 'cos I display them on my 65" 4K UHD Curved Screen TV. So if anyone is wondering about that, it's like the mountain climbers who are asked, "Why do you climb that mountain?". My answer is the same..."Because it is there."
1st Image: Original render 4096 x 4096, 13.6mb. Denoised then reduced 50% to 2048 x 2048, 4.7mb
2nd Image: Got really insane with this one (too much coffee probably). Original render 4096 x 6627, 28mb. Denoised then reduced to 45% to 1843 x 2982, 6.8mb. The hair on her left side rendered messed up on her arm. Still trying to figure out how to prevent that. I think it has something to do with using G3 hair on a G8 model, but not sure about that. I couldn't find any "morphs" or hair settings to prevent it with the left arm pose I used.
If you're frisky you can still display them in whatever viewer you use at a 2X zoom level and shouldn't see any "noise" in either one. I'm gonna go get another coffee now.....