Messages

1

[Max] I need help! / Re: Strong Shadow Catcher Flicker

« on: 2021-05-18, 18:40:32 »

Wow, thank you!

Very glad it's such a simple fix and even more pleased to hear it's fixed in 7.

I'll be switching to 7 as soon as a main release comes out, I've played around in the dailies and it seems great.

Thanks for your help!
Sam

2

[Max] I need help! / Re: Strong Shadow Catcher Flicker

« on: 2021-05-11, 19:51:54 »

Hi Avi,

Sorry for the delay, had to reproduce the error in a new scene.

As far as I can tell it has something to do with intersecting objects reflected in the shadow-catcher material when reflections are turned up?
I originally thought it was to do with having ornatrix hair objects intersecting (which definately seems to make it worse) but I have had similar issues with skin material objects intersecting.

I have uploaded a scene file "1620755056_AnimBox-Shadow-Flicker.zip"

The flicker is less strong in this scene but i have attached a short clip rendered from this scene to show you what I mean.

Thanks for looking at this,
Sam

3

[Max] I need help! / Re: Strong Shadow Catcher Flicker

« on: 2021-04-21, 15:45:22 »

Slight update/correction to this:

The flickering comes from the reflection in the shadow catcher material, if I set the level to 0, the flickering is gone.

It appears to be randomly alternating between reflecting the ornatrix hair or the underlying geometry?

Baking the Ornatrix hair down to a mesh or alembic does not change anything

Any help with this would be great as I'm completely out of things to try!

4

[Max] I need help! / Strong Shadow Catcher Flicker

« on: 2021-04-21, 11:45:25 »

Hi there,

I do a lot of rendering using the shadow catcher material, usually without issue. Recently though I've had a few scenes where the shadows have a very strong flicker that doesn't go away with more samples/UHD presision set to 4/changing the denoiser....etc

The only thing I've found that is a clear trigger for it is having any ornatrix hair objects in the scene?

Has anyone got any ideas why this would be or a workaround?

I have attached my render setting and a short clip (blacked out for IP reasons) with the shadow pass mulitiplied to more clearly show whats happening.

Thanks,
Sam

3Ds Max 2021.3 - Corona 6.1
Threadripper 3960x, 64gb ram, rtx 3070

5

[Max] I need help! / Re: Weird Camera Focus Behaviour

« on: 2020-10-08, 15:16:38 »

Hi,

Yes, using corona camera does fix it, thank you.  I tend to use max physical cam out of habit.

Is the max physical cam not supported any more as I believe my issue has only been happening since Corona 6?
Interestingly, using CoronaCameraMod modifier on a physical camera still has the same issue.

Thanks,
Sam

6

[Max] I need help! / Weird Camera Focus Behaviour

« on: 2020-10-08, 14:37:21 »

Hi there,

I'm having an issue with the 3ds Max Physical camera focusing.

If the focus is set to target distance and positioned on the object, the render will be perfectly in focus both in the IR and in a final single frame.

However, if I animate the camera moving while maintaining focus on an object, any given still frame will render in focus, but when set to render a frame range, the focus will drift until completely out of focus by the end of the frames. I hope that makes sense?

I seem to have this issue on every new file for the last few weeks but only recently began rendering animations out.
I have recreated the issue in a new file that I will attach along with demonstration frames.

I am using Corona renderer 6 hotfix 1 on 3ds Max 2021. (I had this same issue before hotfix 1).
PC specs: AMD threadripper 3960x, 64gb ram, 1050ti.

I can provide any more info as needed. Pretty sure I have probably checked something that shouldn't be and I am completely missing it!

Thanks,
Sam