vraySky and indigoSky

V-Ray V-Ray for 3ds Max General
1

nice day!

i did some tests with the physical sky in both.
dont know who is right and who wrong. just notice
some differences. the lightning from vraySky
is nearly 3 times darker and to geenish.
to correct this i make the sky 3 times brighter and
set the camera white balance r=215 g=255 b=240.

i remember vlado said that the sky in rc3 was about
2 times to dark and it is correted in newer bilds.
these samples here were done in rc4 …

vray1

indigo1

vray1 sky 3 times brighter camera white balance r=215 g=255 b=240

vray2

indigo2

vray2 sky 3 times brighter camera white balance r=215 g=255 b=240

2

does indigo add 2.2 gamma by default? Not sure that is what is going on, but maybe?

3

hi rerender!

yes, indigo adds by default a gamma of 2.2 to the image.
so i did the same for the vray image and correct the color
with the new gamma settings in the vraycolor map.

4

how do you make the sky 3x brighter?

5

It has been noted before that the V-Ray sky is about 2.x times darker than it should be. This is corrected in newer builds.

Best regards,
Vlado

6

Intresting test. I was actually struggling with the Sky paramaeters and your parameters will be usefull for me. I initially tought that 2x was alrealy alot better, and did used a value between 1.5 and 2. If I knew it was more than 2 !

About the white balance, how does it affect your textures ?

7

it affects everything within the image including the light color :cry:

8

ryan_chiong:
i load an instance of the environment-texture (vraysky)
to the materialeditor and check the ‘manual sun node’ option.
as sun node i choose the only vraysun and set here the
‘sun intensity multiplier’ to 3,0.
(the multiplier in the modify tab for the sun is 1,0)

vlado:
okay, but how about the geenish?

pixlab:
i have not tested this for textures. but when the sky has a wrong
lightcolor and you correct this by setting a white balance the color
of the texture should be right.

9

The sun/sky model, along with the Physcam ISO modelling have all been rewritten.
Both colours and exposure work a lot better in the newer builds, fear not.

10

great test monumedia

By the way I notice that the vray render does not have noise (with dof and area shadow deactivate) :slight_smile:

11

which build has these points corrected? He is using RC4 beta i assume?

12

Aside from the fact that internal beta features shouldn’t be discussed in public, i am referring to a later build than rc4, of course.

13

Monumedia : I did an interior view with your parameters, and it gave very nice results !

Good workaround while waiting for the RCxx

(I just divided the color for the white balance you gave by 2. It was too pink IMHO)