Anti-Alliasing problem with Linear color environment

[DaftPunk]

Ok, so I did the EVER SO USEFULL gama correction for a linar color environment, and WOW, lots of detail, Unfortunately, now Im seeing a lot of non-antialised parts of my image where places get dark. Why is that? was the masked by the gama originaly? What kind of settings should I use on Adaptave Subdivision to antialias these dark areas without slowing the entire render?

Just wondering if anyones dealt with this problem.

[RErender]

Does checking "clamp output" help? I can't try here at work, still using 1.46.13

[Gijs]

I think the only thing you can do about that is to lower the noise treshold. Adaptive AA is very sensitive to this parameter. But of course it will affect your rendertime.

[dennis]

i had the same going on with exteriors where i used Irmap + qmc.
I now use the helpfull tip with gamma correction and it realy makes a difference but still have noisy areas in shadow. I then switched to qmc (25) + lightcahce(3000-3500) + adaptive QMC AA ( 1/5 , got lots of small detail ) and this is good for me.

[DaftPunk]

that may be fine and dandy for stills, but I need to animate with this too. Thanks for the tips though. For the moment ive switched back to regular gama but with a monitor gama correction and turned color to exponential so things dont burn out as easily.

[DaftPunk]

Well it seems the only way to remed this is to up my minimum anti aliasing sample from -1 to 1, that way anythign under the threshhold aat least gets antialiased once, and anything above gets antialiaced twice? it seems thats how it works anyway.

[Gijs]

Sorry,

I was thinking you were talking about adaptive QMC, so forget my post.
Did you try lowering the treshold value? Then you could probably still get away with -1/2 or 0/2

[vlado]

Do the gamma correction with VRay's Color mapping, instead of in a post-process; in this way antialiasing will be correct.

Best regards,
Vlado

[DaftPunk]

Well, thats the thing, its Gama through Max settings. So if I adjust it in the Vray-render window instead of rendering through the max window the anti-aliasing will change?