basic settings for quick iray renders

Aristoc

after a year with 3delight i was able to get quick renders of very nice quality. 5 - minutes tops.

what initial settings can i use in iray to get back to that ?

 

thanks

Aristoc

these are my great 3delight settings that have been really quick and good. i dont want to learn all this all over again. fairly new. and an example of what comes out of iray in about 60 seconds.

fastbike1

Iray is a completely different render engine. You may have heard the term PBR or phyisically based render. Iray basically models real light and effects.

You will have to learn all over again. Iray needs different materials/shaders.

The default Iray render shadings will work well enough for most cases. The big difference is that you will need a good Nvidia graphics card to get really fast renders, although in CPU mode Iray should render about as fast as 3Delight.

jestmart

Wrong, Iray only renders as fast as 3Delight if you are using the UberEnvironment light in 3DL.  When using the voodoo that only a biased render like 3DL can do there are many ways to light a scene and still have it render quickly.

nicstt

If you have a good Nvidia card, you can probably get comparable times, and lower. If you're CPU only, then you'll have to wait; it has to calculate light bounces, unlike 3Delight, which uses trickery to get some very impressive results; not by me though, I was never that good with it.

Use an HDRI, and nothing but a figure, rendering with GPU should be done in a minute or two. Adding scene elements that add light bounces will increase the time.

SpottedKitty

Note that, because Iray and 3Delight are completely different render engines, lights (and shaders) made specifically to work in 3Delight will not auto-translate into Iray. Basic lighting using the default D|S lights will translate, but you will almost definitely have to adjust the brightness of the lights, because they do behave very differently. You're going to have to learn lighting all over again — it's more or less like learning to use a manual camera with no auto settings to hold your hand.

Mistermystic

One trick I've recently developed is to create a scene of 3 primitives (planes) that I arrange around a figure as 3 point lights. Just set the material to emissive and adjust it as you like and make sure that each of them is a double sided light, otherwise they might not light the figure. Save scene and merge into any scene you need quick iray lights.

Handspan Studios

I am having a similar question. I had it going fastish at first but then I did something and it's back to taking 2.5 hours for a basic render on a backdrop. If I get it figured out I'll post back here. So far everybody says more light of the hdr type, being careful if rendering "inside"  box type environment, ricochet bounces I guess ;-). In the environment part of the settings there's a way to turn environment off which may help if you don't need all that. There's also an acceleration setting you want "on" and use GPU only if you have a good graphics card. If your graphics card doesn't have enough cuda cores none of this will matter, it'll be slow anyway. I am still fiddling with the rest of it...

Zilvergrafix

Aristoc said:

after a year with 3delight i was able to get quick renders of very nice quality. 5 - minutes tops.

what initial settings can i use in iray to get back to that ?

 

thanks

no initial settings for iray fast renders.

you need a beefy videocard and a lot of ram, period!