Universal V-Ray settings (well, almost)

very very nice results, Throb.
grats (not like you need any:P)

Lele

Re: Universal V-Ray settings (well, almost)

it looks like there is reflective GI caustics on the wall…could be it

Re: Universal V-Ray settings (well, almost)

but there is also WAY less noise and artifacts in general.
plus the rendertime is much less. i want to know what the scoop is :slight_smile:

i mean it looks like reflective caustics in the image that took the longest…as far as i recall it takes forever to calculate…but looks good though

The slowdown is because of the reflective caustics. They could have been done with photon mapping of course, for much shorter render times.

Best regards,
Vlado

These are great examples that I would love to use to prove my point that while the VraySun/Sky is nice, it cannot mimic the subtle richness and contrast of IBL with HDRs.

Ok where can I find time lapsed HDRI’s?
Thanks

http://gl.ict.usc.edu/skyprobes/

Thanks! :smile:

Yeap… that is the only one known to mankind. That is because Paul is the only one crazy enough to capture a full day’s worth of HDRIs by hand.

Actually… I think he made some interns do it… but still.

I thought he said he setup a timer? I’m still looking for an excuse to use these… they didn’t work well for environment lighting, but I haven’t yet tried them with mapping to a domelight. They were taken on a roof within walking distance from me…

I think you are miss understanding what he means.
He is talking about the interpolation samples for the Filter when set to nearest.. not the subdivs for LC, which is what is relevant to the screen/world that you mentioned

Vlado,
You mentioned setting the Maximum QMC AA to 100, I assume this is so that if the sampler needs higher AA it will use it otherwise it wont. Where as increasing the min samples would make the render times alot long as it forces the AA to always use more samples… correct?

As i understood it that´s basically correct. The Key to make it work is setting adaptive amount to 1 tho. if adaptive amount is lower it will use a shitload of samples more. IF adaptive is set to 1, the QMC Image Sampler will decide how much samples are needed for a specific noise threshold.

Thorsten

Yeah… I think he timed his interns as they ran up to the roof, took 12 pictures and ran back… I’m kidding, I am not sure what timing method they used. I will ask him next time I see him. But one thing is for sure, tthey did it long before anyone else.

And it ROCKS…sadly i never recieved the promised copy of the DVDs with the full set…you might wanna poke him and tell him to send it cp :stuck_out_tongue:

Thorsten

well, if you take software like psremote
http://www.breezesys.com/PSRemote/index.htm
and use spherical lenses you can probably automate the whole process

so no need to torture the poor interns :wink:

They wrote their own control app seemingly :

For capturing the sky we used a Canon EOS-1ds with a Sigma 8mm lens. To control the camera, we used the Canon Digital Camera SDK. This C library provides the ability to set camera settings such as F-stop and exposure time, release the shutter remotely, and download images via firewire or USB.

Thorsten

how is it possible to use multiple hdr maps to create an animated sky? A mix map only has two slots…

i.e. > This is using Debevec’s timelapse HDR sequence and the vray dome system. I did not have to get the noise as low. .0005 worked here so the render time is faster naturally at avg of 33 min/frame.

http://throb.net/vray/qmc\_test\_timelapse.mov

what is the set up here please? A client has asked me to produce exaclty this shot…

The method I used for the sequence below is to render the animation through MaxScript in a cycle, e.g. change the hdr map, render a frame, save it, move on to the next:

In newer builds the VRayHDRI map supports IFL file sequences.

Best regards,
Vlado

and for those without newer versions, nor scripting abilities, a bitmap map might just as well do it through the loading of an IFL…

Lele