difference in renders from v.1 and A7.2

[StephenMF]

Does anyone know why i am getting different results from the latest release, compared to older versions of Corona:.
Look below:
The top image is the original correct image.
The bottom is the new "too dark" image from V1

Any help is much appreciated.
Thanks.
Stephen

[maru]

To me this looks like the background (environment) is missing in the second picture. Here is a similar thread: https://forum.corona-renderer.com/index.php/topic,7177.0/topicseen.html

[romullus]

Did you touch gamma settings in older version?

[Monster0605]

I think that is one Gamma Problem.

[racoonart]

The lower one is definitely missing gamma. Maybe your 3dsmax gamma settings are turned off or you saved the image with gamma 1.0

[StephenMF]

Your comments made me review the scene and i think i found the problem.
At my home computer (newest render) the scene would report a missing file:
"C:\Program Files\Autodesk\Mudbox 2015\textures\Lightprobes\horizon.exr"

I just ignored that, because I never added this file to the render (I think) and I am guessing that is the problem.
I will confirm when I get home later today.

Thanks
MyOwnFault-Stephen

[StephenMF]

OK back.
The missing texture was not the problem.
The missing texture was part of a hidden human-size-template from mudbox.
It is now removed.

Customize / preferences / Gamma and LUT are the same on the two computers!?!? (anywhere else i need to look?

There should be no other interfeering bg/environment isssues, they are both the same.

Any other ideas?
NotMyFault-Stephen :-)

[Thom Coffee]

If you use vray camera, change it to default 3dsmax camera and see if the problem still exists.

[maru]

If you are using a bitmap as background (or enviro or light or whatever), check what is the gamma setting in the window where you are loading the file. I mean this place:

[StephenMF]

Some more info here.
I have been rendering this image from two computers, both had A7.2
Without changing anything in the scene, only upgrading to V1.0 this happened.

I am using a normal camera...
I have not installed v-ray
I am not using an image input for light, bg or anything (gamma).
For BG I am just using the RGB color 0,3,7 (very dark blue) I realize that this dark blue is amplified (or something) in the correct/original image, but not sure how???


Stephen

[StephenMF]

Maybe there is another clue in the preview of my two material editors?

Can it be windows color management or something?

Stephen

[racoonart]

The right one definitely does not have gamma correction enabled.

[Edit] Make sure the 2 checkboxes on the right are also enabled (affect color selectors and affect Material editor)

[StephenMF]

Here the two windows are together.
Front one, is the bad render.
Back one is the correct render.

[racoonart]

I'm surprised A7 did not render it like 1.0 . The new one in 1.0 is behaving correctly, cause gamma correction is off, the older one is technically "wrong". What happens if you activate gamma correction in 1.0 ?

[StephenMF]

I can enable it, but not sure what the value should be... Have played around with it before i posted first.
It gets almost right. BG color is much more "correct" but sails that are self illuminated a bit are way off... too saturated.

I'll keep playing around with it.