So I've been trying to figure out Iray, and I think i made some good progress last night. It seems best not to try and change a bunch of settings. For these images, I just loaded my scene elements, set their normal materials, then loaded a single distant light to use for the SUN and set it's position manually. Then set the render to Iray, Dome & Scene, and found an environment image from my favorite skydome set. Now the main preview was super dark, so I set the Alt preview window to perspective and then set it to preview Iray. this window is very small but is great for showing you a thumbnail of the Iray result. I also added 1 linear point light to the scene (just so i could see what I was doing ) this I turned off before rendering. The daz native lights are way too bright by default when using Iray, so they have to be turned WAY down in intensity. they also are set at 1500 lumens by default so that needs to reduced to between 10 - 50... otherwise they wash out the entire scene with too much light. Anther light related thing I had to do was change the light color from 100 white to lite gray of a lite dingy blue. As far as materials go, certain shaders were just not Iray friendly, but the basic ones created with the surfaces tab seemed to be alright, but I'm not sure Displacement or Bump is working to be honest ( will check that in later tests ) the progressive render section of the engine has a quality setting. It's set at 1.00 by default, and a higher value takes longer, but renders a better more refined result. These images were both rendered with a setting of 2.00 ( it took 1 hour and 45 minutes to render each ) for both images I used the bloom feature within Iray, again I had to turn it way down from default settings. the image on the right also had depth of field and a actual camera ( you activate DOF in the camera settings, I did not do that in the left image from the perspective view, so that's why you don't see it there. I'm pretty happy with the results of these renders, no postwork on them by the way, other than Iray logo and my Signature + a slight vignette. NOTE: here is a great YouTube video tutorial I just found: https://www.youtube.com/watch?v=L5FZ5gS9v50