| DOF problems |
 VKotek |
I am using mental ray, and when I render, but I get a DOF error message and the picture comes out strange.
MSG 0.0 error: bitmap expected unsupported GBuffer channel "transparency"
MSG 0.0 error: bitmap expected unsupported GBuffer channel "weight"
MSG 0.0 error: "Depth of Field" effect expected unsupported GBuffer channel "transparency"
MSG 0.0 error: "Depth of Field" effect expected unsupported GBuffer channel "weight"
notice the edges
If there is no way of avoiding this, is ZDepth any good? or what do you guys suggest?
read 3978 times
8/2/2007 4:46:01 PM (last edit: 8/2/2007 4:46:39 PM)
|
| Bolteon |
do your dof in post.
-Marko Mandaric
-------------------------------------------
. : m a r k o m a n d a r i c : .
-------------------------------------------
read 3967 times
8/2/2007 4:57:53 PM (last edit: 8/2/2007 4:57:53 PM)
|
| VKotek |
but how? I cant just blur it in photoshop...
read 3965 times
8/2/2007 5:00:11 PM (last edit: 8/2/2007 5:00:37 PM)
|
| Undersky |
Yes you can.
Render out the Z-depth (found in Render Elements) and save it as a separate file. Then open both your render and your Z-depth in Photoshop and create a new channel (which will be named Alpha 1 by default) and paste the Z-depth image in there.. Then use Filters / Blur / Lensblur and select Alpha 1 as the source.
Fjant.se Demo reel, 2010
read 3955 times
8/2/2007 5:04:20 PM (last edit: 8/2/2007 5:04:20 PM)
|
| VKotek |
oh! thanks! I never used Zdepth before, I thought it was a plugin.
read 3947 times
8/2/2007 5:14:16 PM (last edit: 8/2/2007 5:14:16 PM)
|
| -=LeadMagnet=- |
What a strange error. Nice table material btw.
Do A Barrel Roll!!!
read 3945 times
8/2/2007 5:14:57 PM (last edit: 8/2/2007 5:14:57 PM)
|
| VKotek |
Lead: Thanks! Texture is from 3D Total Textures "clean textures" CD, they are excelent
Undersky: I am stuck on the blur, I have this so far:
the blur allows me to choose from Blur by transparency or by mask only
read 3938 times
8/2/2007 5:21:29 PM (last edit: 8/2/2007 5:21:29 PM)
|
| Undersky |
No, you shouldn't do a new layer, but a new channel... Change to your channel palette.
Fjant.se Demo reel, 2010
read 3936 times
8/2/2007 5:22:32 PM (last edit: 8/2/2007 5:22:32 PM)
|
| Undersky |
The PS approach is just like the render effect you're trying to use, it's 2D blur... You will get some problems around the edges of your teapot. There might be more problems, there might be less, but you will face some problems.
The best thing to do, of course, is raytraced dof, but it will take much longer time to get it noise-free.
Fjant.se Demo reel, 2010
read 3932 times
8/2/2007 5:25:19 PM (last edit: 8/2/2007 5:25:19 PM)
|
| VKotek |
a bit dodgy but I will work on it and try different variations :)
thanks Undersky!
read 3927 times
8/2/2007 5:33:32 PM (last edit: 8/2/2007 5:33:32 PM)
|
| mrgrotey |
vkotek not sure if you've completely got the method, i just thought id put it in black and white
1. render a zdepth pass adjusting the near and far values to get a nice gradual distance between the near and far objects. yours has a very short fade behind the teapot
heres one i did for my garlic press, notice the gradual fade
2. save both the image and zdepth
3.open both files in ps and put the zdepth as a new layer on top of the image
4. go to the channels tab, and Ctrl-left click the rgb channel to create a selection based on the white area shown
5. click 'save selection as channel' at the bottom of the channels tab
6. Deselect the selection.
7. turn off the zdepth layer and select the image layer
8. filter-->blur-->lens blur
9. in the window click the point at which you want the image to be in focus
10.choose alpha 1 (or whatever the new alpha channel was called) in the source dropdown box
11. adjust the radius value to increase/decrease the amount of blur
read 3916 times
8/2/2007 6:10:52 PM (last edit: 11/12/2008 5:21:24 AM)
|
| graphix72 |
I'm using Photoshop 7 at this time, and cannot find the lens blur under my blur filters.
I have Blur, Blur More, Gaussian Blur, Motion Blur, Radial Blur and Smart Blur. Is the Lens Blur something that's available in only the new Photoshop?
read 3324 times
11/25/2008 5:59:18 PM (last edit: 11/25/2008 5:59:18 PM)
|
| Reality Man |
Yea....lens blur didn't come with version 7.
However you can try Mr.Drapers method.
Near bottom of page;
http://www.3d-palace.com/xenomorphic/education/doc_cs_tips.htm
read 3313 times
11/25/2008 6:19:07 PM (last edit: 11/25/2008 6:19:07 PM)
|
| graphix72 |
Yup, PS 10 has the filter, and it works like a charm. It was about time to upgrade anyway.
read 3293 times
11/25/2008 9:50:56 PM (last edit: 11/25/2008 9:50:56 PM)
|
| MichaelRokk |
sorry to ask,
But how to/where to render the zdepth ?
My art blog, check it out
http://maikelmarsman.blogspot.com/
read 1346 times
10/18/2010 7:46:15 PM (last edit: 10/18/2010 7:46:15 PM)
|