Need some advice from more experienced folks about settings and render times

[Ondra]

did you do any contrast enhancement? Or better, can you printscreen the post processing tab?

3 hours seems... working. Certainly not the best result, but it is in the slower end of usual render speeds, given your CPU. Yet you have very low rays/s. There could be several reasons, for example look here: http://forum.corona-renderer.com/index.php/topic,1662.0.html
Are you using any portals?

[Correntes]

Cecofuli:

Yeah :S

Well it's getting rare the works that have manageable deadlines. Usually we have 1 day for 1 image. So if we have to do 4 images, we have 4 days.

That's why I'm trying to migrate to corona. Less settings to mess about, less setting tests to optimize scenes, more time to work on what it real matters.


Keymaster:

Not using portal lights .

Here it is the post-processing settings screen.

I had to use -4 exposure compensation to correctly expose the image. Should I use it only to preview and when saving the image revert back to 0 ?

Thanks

[rafpug]

Hello Correntes

The value of Lights samples Multiplier what corresponds ?

[Correntes]

Hello Correntes

The value of Lights samples Multiplier what corresponds ?

hello,

Everything default.

Screenshot in Reply #5


Thanks

[rafpug]

this value corresponds to 2?

[Correntes]

Yes

[rafpug]

try to render on a part where there is more noise "Crope" bringing the value to 20/25...in extreme case even 40

[rafpug]

try to render on a part where there is more noise "Crope" bringing the value to 20/25...in extreme case even 40

sorry,

Crop -  preview render

[Ondra]

no, this settings is fine, you are not losing any dynamic range because of that

[rafpug]

Hi Ondra,

which dinamice range? in what sense?

[Ondra]

I mean tones beyond displayed white. You partially lose them every time you set highlight compression over 1 or enable contrast

[rafpug]

I understand !

[rafpug]

I mean tones beyond displayed white. You partially lose them every time you set highlight compression over 1 or enable contrast

...should always have White balance as a value of  |k| 6500

[rafpug]

Ondra, a curiosity

When you switch from a Secondary solver to another,
and change the settings

- for example by  PT+PT  to  PT+VPLS

VPLS and change the value Emitted count to 1000

returning with the PT + PT method, the processing of rendering recognizes the 1000 VPLS?

[Correntes]

Yeah... Confirmed that I get the same results if I use -4 exposure on post-processing corona tab or after effects exposure.

rafpug:

With value 20 in  Lights samples Multiplier I get a clean noise free crop. 160 passes 5min render it doubled the render times.

With value 2 160 passes 2.5 min I got noise.

So I tried to run the crop with value 20 for 2.5 min. I got more or less 70 passes with a little less noise than with value 2.


My conclusions are that upping that value, I get slower passes but with more quality.
If I let the render cook for 3 hours I will get less passes but based on the crop test it will have a little less noise.


EDIT

I used a value 40 in Lights samples Multiplier. I let the crop run for 1.5 min (33 passes) and I got more or less the same results that 20 light samples multiplier cooking for 2.5 min.


Is there any drawback in use always 40 in lights samples multiplier ?