Huge render time, help ! x)

[Tetsuoo]

Just look at this. It's rendering right now, the picture says it all. At this point, ANY advice is greatly appreciated. Thanks ! ^_^;

[guest84672]

What are your render settings?

[Tetsuoo]

It's still rendering at the moment, at this point it's going for 10 hours lol (17% -> 1h45 / 29% -> 2h51 etc)
I think the settings are something like :
Samples 96
GI 2.5
Ray bounces 6
Pix filtering 1.5
AA 1
Shadows 5
Caustics... 20 x)

If i don't use caustics I won't have the cornea refraction (using Dielectric mat with a single faced mesh). I pushed it at 20 to avoid grains effect, it's overkill obviously ! But i'm not sure if there is other good method I should be aware of

The mesh for the face was decimated within Zbrush to make it lighter but i don't think that makes a difference for render times... Just lighter for navigating in the viewport.
Ah, also i checked Sharp Shadows and Sharper Texture Filtering

[guest84672]

Making the mesh lighter has no effect. Your settings are very high, in particular the caustic settings. That will increase your render time significantly. I don't think that you need caustics for this example.

[Tetsuoo]

Thanks for replying so fast
I will make a render without caustics and show the results

[guest84672]

Also set GI quality to 1, and maybe set Samples to 32.

[Tetsuoo]

omg just found out that ray bounces was at 64 xD I'm such a fool sometimes.
AND refraction is working without caustics. Maybe i should sleep a little more... x)

[edwardo]

Try taking caustics off and putting ray bounces up a few. As I understand caustics are about the focusing (or scattering) of light as it exits a transparent body - Idont think this is happening in your scene....? However I may be talking pap, I haven't used caustics as I don't believe I have the computational power to use it..... Just chokes up my machine.

[Tetsuoo]

Ok now rendering. I can say the truth now, in fact I was trying to win some Stupid Render Settings Contest
Here, 5 times faster, so far so good :



Render settings :
Samples 32
GI 1
Ray bounces 16 (still too much maybe ?)
Pix filtering 1.5
AA 1
Shadows 5

Happy ! Thanks guys for your kind support

Edit: Come to think of it, I should have disabled the skin bump because it's not working at all. I will try to sculpt the skin detail in Zbrush

[Tetsuoo]

 
Render time : About 1h20min

[Rex]

Do you have "Sharper texture filtering" enabled? That should help the eyebrows from pixelating. Default RB setting of 6 should be just fine for an image like this.