Weird noise when using LWF?

[andrewrpreza]

hello,

 

I have always worked in lwf but for the past few weeks I have been rendering 32 bit exr's and applying the gamma correction in post.

 

I have noticed something weird though, when burning in the color adaptation into my image it looks fine, but when I tick the "dont affect colors" option in vray, I get this really annoying noise. I can't figure out how to get rid of it... Gamma is still 2.2 and every other single setting is the same.

 

You can see an example here.

 

 

Left is no color adaptation, with sRGB button ticked. Right is color adaptation without sRGB button ticked which in theory should look exactly the same.

 

The grain is really fine and you can barely see it but it's there and it's annoying.

 

Any ideas?

 

At the moment I have been "degamma-ing" my EXR's in photoshop and it sort of works... but I want to work correctly.

 

Thanks