Problem with Digital Fusion

NewTek Forum: LightWave 3D®: General Support: Problem with Digital Fusion
Top of pagePrevious messageNext messageBottom of pageLink to this message   By emmanuel duchemin (Mips) (212.198.0.93) on Friday, December 27, 2002 - 02:23 pm:

When I use digital Fusion for DOF (that I prefere rather than the camera DOF)some polys become transparent, besides they have 0% transparence.
Is there anything to do against that ?
yuk1
yuk2

Top of pagePrevious messageNext messageBottom of pageLink to this message   By emmanuel duchemin (Mips) (212.198.0.93) on Friday, December 27, 2002 - 02:37 pm:

I'm sooo stupid, I should be in a museum... I put "render hidden geometry" ON. That must be that... Sorry. Destroy that post before I become the forum's clown

Top of pagePrevious messageNext messageBottom of pageLink to this message   By kevin phillips (Kevman) (210.48.25.160) on Wednesday, January 01, 2003 - 02:57 am:

Nope, that won't always fix your problem - I believe that Digital confusion uses a mix of blur and transparency to achieve its effect, and if your geometry sits just outside the DOF focus area, the geometry can start to become transparent...

Don't get me wrong - I really like DC - It looks great, however even when you activate 'Render hidden geometry', the surface will STILL look transparent, but you'll see the objects behind it - Which if you have, say, a big truck sitting in an alley through which you can see the building behind it, well, that's not really right either! (Unless of course your truck is made from a translucent fibreglass composite that is :) )

Often experimenting with F-stop can help, however sometimes you'll also get occasional artifacting (black/white pixels) which can be annoying, specially in an animation sequence! Dunno what causes that, though... I've seen it happen a few times...

We ended up using old-fashioned multi-pass methods to fake DOF (Layered and using some blur) on a TVC that needed DOF throughout... LW DOF wasn't looking nice enough, and DC caused more headaches then I'd like to admit. :)

Maybe someone here knows of some tricks with DC they'd like to share to get rid of common problems like this?

Top of pagePrevious messageNext messageBottom of pageLink to this message   By emmanuel duchemin (Mips) (212.198.0.93) on Wednesday, January 01, 2003 - 03:58 am:

Yes, I have artifacts problems too... And the camera DOF is ugly...

Top of pagePrevious messageNext messageBottom of pageLink to this message   By emmanuel duchemin (Mips) (212.198.0.93) on Saturday, January 04, 2003 - 12:03 pm:

So, camera DOF is ugly, Digital confusion gives artifacts... What can we use then ? Any plug ?

Top of pagePrevious messageNext messageBottom of pageLink to this message   By kevin phillips (Kevman) (210.48.25.223) on Sunday, January 05, 2003 - 02:51 am:

A bit of imagination, some scene splitting and rendering and image processing! :) You can get some pretty nice effects with a bit of gaussian blur and LW compositing/front projection mapping (and sometimes it can be FASTER to do it this way, then with LW tools!) :)

Top of pagePrevious messageNext messageBottom of pageLink to this message   By Psyhke (Jbeck) (24.163.209.122) on Sunday, January 05, 2003 - 05:41 am:

I don't have it, but I've heard many peole rave over X-DOF. I'd check that out:

http://www.evasion3d.com/xdof_intro.html

Top of pagePrevious messageNext messageBottom of pageLink to this message   By emmanuel duchemin (Mips) (212.198.0.93) on Monday, January 06, 2003 - 11:49 am:

Imagination ? oh my... where can I get that ?

Top of pagePrevious messageNext messageBottom of pageLink to this message   By emmanuel duchemin (Mips) (212.198.0.93) on Tuesday, January 07, 2003 - 10:06 am:

Just get X-DOF, will let you know if it's good or not.


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