In Daz Studio you may add to your figure hair, clothes and jewelry from different sets and locations, mixing and matching things to get the look you want.
You could just save as a scene subset, but there is a better way that when loaded again results in all items saved to be fitted to your figure and its fast - Save as a Wearable preset.
Ok, so you have your scene loaded in Unreal Engine 4, you like the lighting and want an HDR image to use in Daz Studio iray.
You can do it
1. Under All Classes, search or find "Scene Capture Cube" and drag it into your scene (central position in your scene may work)
2. If you dont have one, create a folder for your hdr, right click in your folder and under "Materials and Textures" select "Cube Render Target"
3. Raise the resolution to max by right clicking on the render target you just created>EDIT and save it
*looking into raising to higher resolution and will update when I find out how*
4. Now Drag the "render target cube" onto the "scene capture texture target"
5. You can now export your hdr to use as fast and fun hdr lighting in Daz Studio.
In Daz Studio, under render settings, load your new hdr in Environment>Environment Map
A quick render below using the above hdr for lighting, You could use a high res screen capture from UE4 as a backdrop in Daz studio if you wanted to.
This tutorial assumes you have a morph you want to transfer from Daz Genesis shaping parameters or custom morphs to Genesis 2.
If you have a Character with various shaping tweaks then first create a single dial morph for Genesis 1 as shown here
This tutorial is for those who want to create in Daz Studio 4.7 a single dial morph for characters you have created/tweaked multiple morphs on. The aim is to use this morph in a further tutorial but you might want to just use "your" morph on a slider so you can mix it with other characters etc. Bear in mind you cant distribute the single morph you create if you use morphs created by others on your source obj file export.