We just had similar issue, with artifacts in random frames using ZDefocus. Very
hard to debug.
In our case the artifacts were triggered by large depth differences and
appeared in same place. Reducing depth difference in these places removed
artifacts completely.
Hope it helps.
Lev
From: Doug Wilkinson [d...@buck.tv]
Sent: 06 February 2014 22:37
To: Nuke user discussion
Subject: Re: [Nuke-users] ZDefocus buggy?
Yea i've noticed this with zdefocus. i don't think that clamping fixed this
issue.
On Tue, Feb 4, 2014 at 6:50 PM, Frank Rueter
fr...@beingfrank.infomailto:fr...@beingfrank.info wrote:
I have had this with an earlier version of ZDefocus but not recently. Checking
for NaNs is definitely a good idea.
On 05/02/14 15:27, Ryan O'Phelan wrote:
Any chance there are NANs in the renders?
Mental Ray?
R
On Feb 4, 2014 10:23 AM, Falko Paeper
falko.pae...@filmakademie.demailto:falko.pae...@filmakademie.de wrote:
Hi Nukers,
has anyone of you guys ever got wierd artifacts (infinite color values) or
unstable comps using ZDefocus?
It happened twice now in two different companies with two different projects
and two different version of nuke (NukeX 7.0v6 NUKEX 7.0v9).
It appears on random frames (in a sequence of 300 frames on 2 or 3) and (I
think) only when the focus plane is animated and/or when I use multiple
ZDefocus Nodes in the same comp. Also the comp gets highly unstable and crashes
by only clicking on the ZDefocus node. In both cases the depth pass was
rendered with sitoa to EXR with the depth info stored in Alpha but I doubt
thats part of the issue since I checked the data and its all normal (no broken
pixels or unusual values).
The thing is, I can get rid of the issue by either disable automatic layer
spacing or shuffle the depthpass into another channel then depth? But that
only helps for one frame and it then will certainly appaers on a another random
frame. At least I can somehow fix it but its still pretty annoying. Anyone with
similar experiences or work arounds?
cheers
Falko
__
Falko Paeper
falko.pae...@filmakademie.demailto:falko.pae...@filmakademie.de
Skype: fpaeper
Karlsplatz 1 | 71638-Ludwigsburg | Germany
__
Falko Paeper
Tel. 0173 74 84 449
falko.pae...@filmakademie.demailto:falko.pae...@filmakademie.de |
falko-pae...@web.demailto:falko-pae...@web.de
Skype: fpaeper
Karlsplatz 1 | 71638-Ludwigsburg
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