TG2 render LUT?!?

[rodpacker1]

Hey,

I've always wondered what LUT the renderViewer in TG2 uses, as if I render images to exr and open them in i.e. Nuke or any other viewer, the results look completely different and by different I mean not as good.

What is the default used for the render viewer so I can replicate the same outcome whilst editing the exr's in another tool?

thanks for your help
rodpacker

[Tangled-Universe]

When you render to a lower bit format the contrast and gamma settings in the rendernode will be applied to the image.
When designing your scene you will always asses your results using this low dynamic range.
However, when rendering to EXR these contrast and gamma parameters are not applied and thus the result looks entirely different.

[rodpacker1]

Hi Tangled-Universe,

cheers for the quick reply. 

I am aware of this, what I was trying to find out are these settings as I think they work very well with TG2 created images.

cheers
rodpacker

[Oshyan]

The gamma that is applied is standard, and is set through the render settings. Contrast may also be a standard function, but I'm not certain about that. What may be harder to emulate is the "soft clip" effect that is - as far as I recall - a somewhat proprietary tone mapping effect. I think the biggest difference will be made by the gamma and contrast adjustment though.

- Oshyan

[rodpacker1]

thanks for clarifying Oshyan,

that explains why I can't get it to look exactly alike

makes sense now. 
cheers
rodpacker

[domdib]

Interesting, I was just wondering what "soft clip" did. How does it relate to tone mapping?

[Tangled-Universe]

Interesting, I was just wondering what "soft clip" did. How does it relate to tone mapping?

How do you mean, relate? "Soft clip" IS tone mapping, done by TG2 in a proprietary way.
To see what it does you might compare renders using and not using it.
I've played with it some times, but I couldn't tell if it makes a huge difference.
It might depend on the scene I was using then.

[Oshyan]

I believe soft clipping basically tempers the highlights a bit to bring more detail to bright areas without them "blowing out". I've seen similar effects in other programs that are also actually called "Soft Clip".

- Oshyan

[domdib]

Thanks for the explanation.

[rodpacker1]

Hi,

just another question on this topic...

is there  a way of converting rendered exr's to jpeg's using the TG2 proprietary algorithm by batch converting them by any chance?
Or render out both (jpg and exr's) at the same time?


That could be VERY handy


cheers

[Oshyan]

There is no way to do post-conversion at this time, however we are considering adding that kind of functionality to the render viewer eventually, along with render "history", etc. When you make a render you can manually save both a JPG and EXR by simpling saving twice and changing the format. However you can't do this automatically with a sequence render at this time.

- Oshyan

[rodpacker1]

Thanks for clarifying Oshyan.

Yes I meant an automated way whilst rendering a sequence. 

Ok guess we'll just have to wait for the post processor - which would be a wicked thing to have