HI: I have Daz Studio 4.9 and I did a render with three lights. 2spots and one distance light. One V7 and a background figure, one of DM's sets. I have a good PC with 64 gigs of RAM and the Nvidia 4 gig graphics card. It took about four hours to render, which I thought was a long time. Now I find info at Daz that some people were having 7 day renders with Iray and still getting grainy renders. I will try to attach the render. I was very disappointed to get such a result and would like to get a sharp crisp render. Can you help? I am a long-time Poser user and this never happened with firefly, which renders fast I think.

Her hips look really grainy.

Hi, When I get this kind of grainy results from Iray and it has run for quite some time like your render, I have found what works for me is to increase the lighting by a considerable amount (2x to 3x - keeping the same proportions) on all light sources. Then reset the tonemapping. You can change any of the parameters (EV etc.) to get the light back to the same level you have. I know I have only had this problem with scenes I wanted lit less. I can tell you that it usually works for me.

That is a very nice composition and use of reflections.

Jack

Hi drifterlee, I used Poser too for a very long time, but a physical renderer like iray or superfly cant be compared with a renderer like firefly. Ok you can change a lot in the settings to get less grainy images and render the images faster. Dont forget that if you change some settings it can also take longer!. The first thing you want to do is, make sure you have all the materials on the models Iray ready, if not, then it can take hours because Iray simply don't know what to do with the render materials. Second thing i recommend is this:

a lot of users don't know that they can scale the 2 Environment Spheres , it will affect the light, and also the HDRI maps usually I use Finite Sphere with ground on scaled down to only 9% for portraits or close ups and use Infinite Sphere only for landscape rendering like nature or cities . I also highly recommend to check off the Burn Highlights per component , set the Burn Highlights to 0.25 set Crush blacks to 0.20 setting off the Crush Blacks to 0 will create less contrast it is good for very close up portraits.

Third:

The best is to use the Sun Sky with the correct day time latitude , I use often the Exif data info from my photos to get exactly the light and second options are HDRI maps there is plenty free maps online to download when you load HDRI maps use the Finite Sphere and scale it 9 %down when use with models but not always and the last but not least are photo metric lights in Daz Studio to use with Iray , do not used distance light or spot point light from DS, for PBR only photometric lights works best.

In this preview render i made everything myself( textures, characters etc). This is just the iray view and not even really rendered, as you can see no grainy bits. and it was done in 5 mins. I can rotate and change it in real time and i have a lot of less resources than you! This is due to the fact every skin map is iray ready, this way it will render a lot faster. Also if you have displacement maps, it will take iray longer to render the files.

There are even more settings to reduce the grainy renders:

Adjust tone mapping settings: A higher ISO, a lower f/stop and a lower shutter speed number should improve it. You can also increase the cm^2 lumiance setting.

I also found this:

http://buerobewegt.com/quicktip-rendering-even-faster-in-iray/

Another thing to look at is that in Iray Render settings the gamma is set to 2.2. If the actual texture on your object isn't set to 2.2 your results won't look so good. To adjust the gamma in Iray surface settings or even 3Delight click on the image in the diffuse color channel, select image editor, and in the pop up adjust the gamma. Or adjust the gamma in the render settings to match that of the gamma set on the textures of your figure.

But like the others mentioned, lighting and environment setup is also very important.

@Tirenzi3D I use that trick in the link you mentioned alot. It really does work. A lot of my promo images were done using that trick.

while this is not for Iray, it is an unbiased renderer, so the specifics of what they won't be the same, however the concepts may help http://preta3d.com/kill-the-render-noise-form-your-lux-scenes/

...Who the hell renders for 7 days? Man that's stupid...I would never do that, if my machine had to take that long to render, I just wouldn't bother with DAZ, period. TOO damn long to render just one scene.

Why was this thread necro'd from 2016? It's 2019 and a lot of what's talked about is outdated to have any discussion about it.. especially since DS has the denoiser in the beta (not sure if it's in the official version yet)

Also the solution to grainy renders is to properly light the scene, which everyone was learning how to do back in 2016 versus what they've been used to doing in biased renderers like 3Delight.

Male_M3dia posted at 8:18AM Thu, 20 June 2019 - #4347811

Why was this thread necro'd from 2016? It's 2019 and a lot of what's talked about is outdated to have any discussion about it.. especially since DS has the denoiser in the beta (not sure if it's in the official version yet)

Also the solution to grainy renders is to properly light the scene, which everyone was learning how to do back in 2016 versus what they've been used to doing in biased renderers like 3Delight.

ROFL? "Properly light the scene" yeah tell that to PaperTiger, a guy who has PERFECT lighting who also told me that DAZ is just pure shit in general and can't handle grain that well compared to Octane, VRAY, etc. Lighting properly have nothing to do with Grain. DAZy is just a shitty poor mans Octane, its bad enough that crappy junk freezes and crashes my machine all the time and its brand new with a 2070 graphic card. Plus the Denoiser is also ass, it causes quality reduction. Octane's doesn't.

Lol You Guys ShOULD USE STOP RENDERING