Hightlight Clamping: bad result

[cecofuli]

Hi

as you can see, it's impossible to obtain a clean AA with the clamp option.
The scene is a bright lamp. but, I have the same problem with windows and strong, bright HDRI as a  Sky.
Only if I use Hightlight Clamping=1 I can obtain a good AA. But, we lost too much information.
I tried all filters, but, without good results.

The only solution is to render as 2X. Then, resize in Photoshop with bicubic interpolation...
I miss the good, old Corona int res parameter....

[Frood]

How many passes are these?

Good Luck

[cecofuli]

A lot =)

[PROH]

Hi. Haven't tried it yet in 1,4 final, but used it in dailies with good result - after some testing. One thing I did find out, was that (in my case at least) VFB clamping worked "bad" together with "Highlight compression". Especially if Highlight compression was set to a high number.

So is your result also using Highlight compression?

[Ondra]

what highlight compression do you use?

[cecofuli]

[Tanakov]

I often have the same problem, how to fix this?

[cecofuli]

Right now, I think that we have no solution =/

[maru]

That's strange, but I have trouble reproducing this. I am getting pretty soft edges with similar settings.
Any chance you could share the scene? Here or over the support portal?

[arqrenderz]

I have the same exact problems, light jaggies dont go away now..

[maru]

Any example scene would be appreciated:
https://coronarenderer.freshdesk.com/support/tickets/new

[cecofuli]

Here the files

[maru]

Here are my tests.
I changed adaptivity recalc to 5 (you had it set to 1 for some reason).
Left the filter at symmetric tent.
500 passes.

Am I wrong or does it look better than in your images?
Maybe your results are so extreme because of the crazy purple-yellow contrast?

[cecofuli]

Mmm... but, in your test, the lamp color is yellow. In my test, is white.
I don't want to clamp the output...
with clamp = 1, obviously, I have a better AA =)

[maru]

Mmm... but, in your test, the lamp color is yellow. In my test, is white.

I just opened the file and hit F9. No idea why the difference.