I recently bought the 3D Celebrity Starlette (http://www.daz3d.com/shop/3d-celebrity-starlette). It is a V4 character. I tried out the V4 character INJ morphs and I tried putting the Starkette skin on to a Genesis body. I was surprised to discover that the skin looked different on Genesis than on the V4 based character. The skin on Genesis looked more shiny or brassy. This is illustrated in the first pic below. In this image I have removed the Starlette face and body shape from the V4 based character on the left. The The Genesis character on the right is the V4 shape for Genesis with the Starlette skin.
I started to compare the settings under the surfaces tab for the skin of the two characters and discovered they were quite different. Things like the Glossiness, Specular Color, Specular Strength, Ambient Color and Ambient strength were all set quite differently. Where do these values come from? Are they Genesis skin defaults? I started to try to change them, but then I noticed a different icon labeled “Starlette MAT INJ” rather than the “Starlette Full MAT” icon I had used. I tried that Icon on Genesis, not really expecting it to work, but it did! It changed a lot of the surface tab settings so they were the same as the V4 version. The result is shown in the second image below.
This is much closer, but still not exactly the same. I started checking the surfaces settings very carefully. I noticed there still were some differences. The Genesis skin areas were using Lighting Model “Skin”, while the V4 based character was using “Plastic”. Also the Genesis character had maps for specular strength and displacement the V4 character did not. Not sure how or why the Genesis character picked up these maps when the V4 character did not.
I did a save as material preset on the V4 character and merged that preset file on to the Genesis character. This seemed to change all the properties I could see on the Genesis character to be the same as the V4 character. The 3rd image below is a render with these settings. To me the skins in this image are close enough it is hard to tell them apart.
Do you always need to save a material preset of from a Gen4 character to use the skin to work the same on Genesis? Or is it just the Celebrity Starlette package that is set up so the skin requires a lot of special settings to look the same?