AA around highlights

Corona Corona for 3ds Max Help Required
1

Seen a lot of images in gallery with same problem and dont have a clue how to fix that poor AA around highlights. In this image its just a sun with only 0.02 power. But the sun highlight is still very overbrightened. Even with Highlight Compress at 50 its still has a problem.
Any suggestions how to deal sun highlights AA?

highlights_1.jpg
highlights_1.jpg1305×778 259 KB

2

Hi. You could try to set Internal Resolution (system tab) to 2 instead of 1 (default). It will render a little slower but will give better AA on highlights.

3

Thanks a lot!

I tried many things here, reducing MaxSampleIntensity to like 15-10-5; uprizing Light Sample Mult over 10 and higher, put AA balance to 2-4-6 and so on. Nothing work!

Here is image with Internal Resolution = 2. Still the same.

highlights_2.jpg
highlights_2.jpg1114×467 135 KB

4

Yes, I see it didn’t help. But I also see, that the highlight at the bottom of your render looks OK. So question is, why do the highlight at the bottom differ from the two others? Is it the same light they are reflecting or is the mesh build different? Or…

5

yeah, it looks ok, but it is reflections of those 2 highlights in fender. So this is not direct highlight but reflection of it, and somehow it looks good.

highlights_3.jpg
highlights_3.jpg1114×467 141 KB

7

Ok, got it! Many thank Rawalanche!

I come up with idea :smiley: Not sure if it`s possible but what if we can put a texture over sun to get a gradient with black edges and really hot dot in the center?

highlights_4.jpg
highlights_4.jpg557×692 35.6 KB

8

Gradient wouldn’t help, because intensity in the centre would be still millions times brighter than everything else.
There was a talk somwhere on forum that at some time in future glare effect is planned for Corona, IIRC. Now that would be ultimate solution :]

9

Thanks a lot, guys! Really appreciated!