Well, this only works if you can change this "Blend Mode"...
Popcorn FX does not have this, so the only way to do this (as far i know) is with "Alpha Threshold".
An "Alpha Threshold" of 40 and "Self-Illumination" of 70 on Fade_Mohawk_Hair would be good enough for me...
https://www.dropbox.com/s/dv3yzdecjqbtd1t/Hair%20and%20smoke%20and%20DOF%20Alpha%20Threshold.iProject?dl=0


Toystorylab on Vimeo :     Crassitudes (my "Alter Ego") on Youtube: 

If you change the Blend Mode from "Big Smoke" from "Alpha" to "Addition" the problem does not occur:
(A few changes were made to the diffuse map of "Big Smoke" and the oppacity of one Particle key so the smoke is not so "white"...)
https://www.dropbox.com/s/ym5l9i58xuo644t/Hair%20and%20smoke%20and%20DOF%20XXX.iProject?dl=0





Toystorylab on Vimeo :     Crassitudes (my "Alter Ego") on Youtube: 

Tony,

If you are using Win 7 my guess is that just by upgrading your system all your problems with this particular hair would go away.  Honestly, I can't imagine running iClone with anything other than the latest OS, just as I can't imagine using an obsolete graphics card with it.  But if you *are* using 10 and things are still screwy then perhaps there is something else you can do to fix things.

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Alienware Aurora R16, Win 11, i9-149000KF, 3.20GHz CPU, 64GB RAM, RTX 4090 (24GB), Samsung 870 Pro 8TB, Gen3 MVNe M-2 SSD, 4TBx2, 39" Alienware Widescreen Monitor
Mike "ex-genius" Kelley

More on the opacity hair front. I realized I do in fact have many Daz hairs that do not have the pixelation articating issue, so one theoretically may not come across it due to not having brought in a specific hair.

The second thing is that at worst, I can still resize the screen to reduce the hair issues to a great degree.
@Animagic, did you ever try making the viewport small as a workaround for your scene with Jade and Zane?

Given that others have an opacity issue and screen size thing I don’t think that my system is a unique one-off factor here, more the current iteration of iClone gives many users the issue. But, so I wonder if someone who does not have any opacity issues would not also be seeing the screen resizing issue.
@KT , or anyone with no opacity issue encounters- Do you ever see that altering iClone viewport size affects your renders ever? If you would tell us, no, because you never resize it would leave the question in the air unanswered. If you say, yes I always see changes when I in fact resize, or no I never see changes when I in fact resize, it would answer.

Regards!

i had the same problem, i have a big project with many scenes done and updated my iclone then boom all my props have disappeared but deleting my temp folder brought them back, as i read it here. thank you guys, you are soooo helpful

Ever since the update, I can no longer export animations from 3DXchange to iClone. I keep getting an error, referring to an invalid character in the filename, then it says "Export Successful" but there's no motion file,  just the iAvatar file.

Perhaps the case should have been simplified. Anything in the front of the particles, which has opacity less than 100% is getting suppressed. And this is totally unacceptable!
Here is a red cube and a blue billboard in the front of the white planes (iClone particles) and a smoke (PopcornFX):

I really don't know if it is a technical limitation or not. I remembered that we had a that issue in Moviestorm, and that was the fix.

I did download your example scene and test it out. Not a perfect solution, but works for a still shot. If she is moving, or the camera is moving, then the change of what's behind her, even with keying the opacity, could be bad.

Rampa, thanks. Is that a technical limitation then for which there is no easy fix?

What I have been doing in a similar scene is to have a separate render with just the characters with hair and then combine that with the complete scene with fog, but the characters bald.

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@Animagic

It's a depth-sorting issue. It has trouble figuring the proper transparency when transparencies are layered. Hair with opacity in front of fog with opacity.

There is sort of a fix, and that is to make the hair opacity not completely transparent. There are a couple ways to do that. You can reduce the strength of the opacity channel. This has the advantage of being something you can animate. The other way is to lighten the opacity texture with the texture adjust panel This cannot be animated though.

Sadly, it will then look weird wherever it overlaps something 100 opaque. :(