The top image has a strong reflection on the tear line mat zone. It looks like the 2nd image has it invisible.

The grain is from too low quality of render settings. There isn't any one setting that works well for all scenes. Low lighting is one factor that affects it. There are others. These are my usual final render settings. They work for most things, though sometimes if the hair I'm using is high quality and has many layers I'll need to increase the max transparency. If you can use GPU rendering, these won't work.

If that is grainy, I'll use these. Most times it's only a small portion of the image is grainy, I'll just do an area render with these.

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Available on Amazon for the Kindle E-Reader Monster of the North and The Shimmering Mage

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I use Poser 13 and win 10