AA and motion blurring a depth pass or not (was RE: DOF and Depth Pass probl 2005-03-22 - By Raffaele "ThE_JacO" Fragapane
Back
I've been with you on most of this, but I fear I sort of lost you here :)
Could you provide an example of a situation where you had problems combining
the two and it would look weird?
I'm also afraid my perspective is a bit narrow, as I've always only worked
on filmwork or mixed liveaction+CG commercials, so I can't picture clearly
cases (like titling, fully CGmovies, logos etc.) where these issues are
detached from reality and, I'm sure, become more relevant.
I've also found that I hardly ever need moblur and precise DOF in the same
background, to get that kind of effect you'd need a pretty weird camera
setup in real life, and if the whole BG is moving that much (either because
of the camera move or because it's actually moving objects) moblur will be
so field filling that a normal blur will do the trick, without going into
the kind of circle of confusion meldy blur that detailed DOF needs.
~Raffaele Fragapane
~Lead "I'm sure we can make it work"
~Peerless Camera Company
-- --Original Message-- --
From: owner-xsi@(protected) [mailto:owner-xsi@(protected)] On Behalf Of
Morten Bartholdy
Sent: Tuesday, March 22, 2005 3:53 PM
To: XSI@(protected)
Subject: Re: AA and motion blurring a depth pass or not (was RE: DOF and
Depth Pass problem)
True Raffaele - and for transparent obejcts this is true also. Still with FG
and BG split into separate passes there seems to be no cheap solution to
adding DOF to motionblurred material that I've heard of, except for those
situations where depth in a given pass can be ignored and a fixed out of
focus filter can be applied to the separate passes. Any suggestions?
--
Morten Bartholdy | morten@(protected)
Denmark
-- -- Original Message -- --
From: "Raffaele "ThE_JacO" Fragapane" <jaco@(protected)>
To: <XSI@(protected)>
Sent: Tuesday, March 22, 2005 2:23 PM
Subject: RE: AA and motion blurring a depth pass or not (was RE: DOF and
Depth Pass problem)
> The one thing I think is missing is the context.
>
> when would you have a situation where you need a unified depth pass for a
> quickly moving motion blurred foreground AND a moving motion blurred
> background?
>
> In those cases you usually isolate the depth passes for the foreground and
> background elements to have more range and control on individual items,
and
> in that case the artifacts of BG VS FG will not matter since what you are
> doing happens in the object/bundle of objects in the respective layers.
>
> There sure are situations where these issues may arise, but they seem to
be
> mostly exceptions since most times you have a hero in foreground on a shot
> plate and only additional props or photogrammetry on the back place.
>
> If we consider a single beauty for all the elements, or fully CGmovies
> rendered in one huge go, I'll agree; but how common a situation is that?
> Passes should be sensibly used to split FG and BG layers as well, and in
> that case you want individual depth passes.
>
> ~Raffaele Fragapane
> ~Lead "I'm sure we can make it work"
> ~Peerless Camera Company
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