Problem with Lights Kelvin and VFB White Balance

[Dionysios.TS]

Hi guys, I noticed something weird and not correct IMHO.

Here are the steps:

1. Create a Corona Light and set Kelvin color to 3.500
2. Render and in the VFB set White Balance Kelvin to 3.500

Result: The light's color has a bad coloration in general and is not white as it should be. The lighted surfaces have not a correct contrast and highlights and the image seems darker.

Now do this:

1. Create a Corona Light and set Kelvin color to 5.000
2. Render and in the VFB set White Balance Kelvin to 5.000

Result: Much better and lighting seems more efficient!

So, In the first case, it should be the same result as in the second one as the White Balance has the same K values. But is not like this, actually it seems that using warm K values the light is a bit altered.

I attached some very fast test for this.

What do you think?

Thanks,

Dionysios -

[Nik]

Corona 1.5?

[Dionysios.TS]

Yes, didn't tried with 1.4

[Nik]

It's a new colormapping procedure order in 1.5.
I told devs that something wrong with colormapping in 1.5 RC but they disagreed

[Dionysios.TS]

My nights shots or daylight + ies lights shots look weird! -.-

[DKulakov]

My also. Wait for corrections?

[Dionysios.TS]

My also. Wait for corrections?

Same results!!! The lights seem to have a strange weak strength which I don't like at all unfortunately.
1.4 worked better in this case.

[DKulakov]

1.4 worked better in this case.

Definitely!

[DKulakov]

Another example.

[Spear]

Primary lighting gives a blue tint 1.5. Fix it please.

[Dionysios.TS]

Thanks for posting the example. I am having this issue without using filmic highlights too... When the light's Kelvin is warm (3.000 / 3.800) the strength and color produced is weird whatever highlight's compression method is used.

[DKulakov]

Aaaaaand?

[Dionysios.TS]

Aaaaaand?

I don't know...

Didn't received any new from the team yet. I also started another post the same day I started this one about some issues with IES file in Corona, but still no news.

[Juraj]

I did play with white balance and I think I could replicate it. Actually anything else than pure 6500K looked bit odd. Decided to do WB only in Photoshop in meantime.

[Dionysios.TS]

Yes, really strange!