Iray rendering problem

downtoearth

Hi Everyone.

I am very new to this and need some help.
I am trying to get an idea of how lights and rendering works in Daz Studio 4.8, but when I render a scene with Iray, the results comes out as the attached picture.
Does anyone have an idea of, what I do wrong, or is it caused by a too old graphic card and a too slow computer?
Any help will be appreciated; comments or links.
I have looked in the forum and watched some YouTube tutorials, but haven’t found any solutions.
If you need to know anything about my settings in the scene or at the rendering to be able to help, please let me know.
Here is a few details about the graphic card and computer:
Graphic card: NVIDIA GeForce 9600 GT, 512 MB, GDDR3
Windows 7, 64-bit
Intel Core 2 Quad CPU, 2.67 GHz, 4.00 GB Ram

Dan

Tobor

Not enough light.

Unlike many other rendering engines, such as 3Delight (also in D|S), light cannot penetrate walls or ceilings in Iray. If you have light outside coming in through a window, only that light through the window will illuminate the scene.

You should first try scenes without a setting. Use the default HDRI environment lighting scheme that loads with Iray. There is no setting, but you can more readily see the effects of how lighting works in Iray.

Upgrading your graphics card or system isn't going to help with this, only make your renders go faster.

Tottallou

The render looks as if its unfinished - Your graphics card will not be used for the render as it only has 512MB  so it is being done by your CPU

CPU rendering takes much longer to complete & the basic settings often do not give enough time so chances are the render stops as you have hit the 2 hour limit but if you look in the help - log it will confirm which parameter was reached in this case

Perhaps start by increasing the basic parameters under Render - Completion

The scene is also interior & low light which takes longer for any render - You can make it brighter by using tone mapping or adding more lights if needed

 

downtoearth

Thank you so much for both of your advices Tobor and Tottallou. I will try some of it out, and let you know about the results. It will take some time, because the machine is slow ;-). But I get back.
Your help is very much appreciated. 

Tobor

The scene is clearly too dark, additional time isn't going to help. You need to first address the lighting. It would be like taking a poorly lit photograph then expecting a few tweaks in Photoshop will make it look perfect. Light the photo correctly to begin with, and you're 95% of the way there.

Being a physically-based renderer, Iray is all about the lighting.