Image deffect from 3dsMax and VRay

[No Comprendo]

Image CROP.jpg

Hi,

I'm having a serious problem with severe stair stepping in an image from 3ds MAX and VRay 1.5. Please the image attached. Anyone knows any solutions for the problem?
Maybe a parameter? Anti-aliasing?

[Zdravko Barisic]

please mark with red what is your problem? try with AA - 2/10, that would be a hard sharp AA settings
good luck!!!

[Eric Adams]

Under "Color Mapping" in the V-Ray render setup tab, enable "Clamp output", and put the "Clamp level:" to ".97". That should fix the problem. The "stair stepping" aka jaggy lines has to do with Max's inability to smoothly transition from the brighter than white specular hi-lite to the adjoining colors. By clamping the output, you're forcing the colors to clamp to the visible range of colors, or "pure white" to "pure black", and not beyond those two colors.

[Corey Beaulieu]

I don't know the answer but Eric's logic does seem correct. Though why 0.97? 1.0 would be just as good.

I would add to this that your edges themselves are far too sharp for such a close up shot. Detailed models make for detailed shots. Chamfer some edges, even if the amount is barely visible.

[Eric Adams]

.97 vs 1.0 - good question, and one I don't know the answer to. I came across it in a tutorial, and started using .97 and it fixed my problem so I updated my presets with it and never looked back.

For the chamfered edges - I like using the VRayEdgesTex map in the bump slot. However, I can't find it right now since I just updated to the new version of VRay - it's still supported, but I don't know how to load it for new materials.

[Dave Buckley]

what is that screenshot from? frame buffer or photoshop. is it a 100% crop? it just looks to me like a computer display issue and not displaying the full pixel.

[_ _]

its not a clamp issue its shitty AA - you can see it on the timber edge above as well.

[No Comprendo]

Thanks you all for your replies.

I didn't mark any specific area of the image, because I see this problem all over.
I'm going to test the same image by modifying clamp and AA. Let's see which one has the most influence concerning this specific jaggy lines issue.

I'll come back with the findings.

[No Comprendo]

please mark with red what is your problem? try with AA - 2/10, that would be a hard sharp AA settings
good luck!!!

You propose 2/10 setting. But which filter should I use? There area several options...