DOF problems in version 1.0.3?

[akiefer]

Hi,

I seem to have lost DOF since version 1.0.3? It does not matter how I set my camera tag and check the DOF. the scene stays sharp. On a test scene I see the exact focos plane rendered slicing through my objects. It takes quite a long while but the scene stays sharp after render even with an extreme setting for DOF. And yes I have put the scene in centimeters :)

Albert

http://www.sectora.net/vray/dof_problem.jpg

http://www.sectora.net/vray/dof_problem1.jpg

[tcastudios]

I haven't checked if there are any differences regarding DOF in 1.03 and earlier versions, but for me it seems to work as it should.

If I look closely at your pict, it does look as there is blur further away.
Or maybe I'm to tired atm..

Cheers
Lennart

[akiefer]

Hi Lennart,

What you see here is the completed render! So all the artifacts are there when the render is finished. This is with the "very high" preset for GI. So obviously there is something wrong here...

:cry:

Albert

[Cristian Tumiati]

HI Albert,

Could you post the scene?

try to resolve your problem.

Best Cris

[tcastudios]

Hi Lennart,
What you see here is the completed render!Albert

Ah, I see.. I told you I was tired....


Cheers
Lennart

[akiefer]

Hello Cristian,

Unfortunately I did not save the scene :( I was a bit too frustrated last evening.

However I still remember that I made the row of cubes (standard cinema size of 200 units) by using Mograph... so maybe that is a reason for this strange behaviour?

I'll see if I can duplicate the scene for you (and more important; the problem :) )

Albert

HI Albert,

Could you post the scene?

try to resolve your problem.

Best Cris

[Fluffy]

Strange result you got here.. :?:

I setup a quick scene similar to yours and everything is fine.

First, let me just tell you a quick checklist to get DOF active in your scenes :
- place a camera in your scene, and set the target distance to the object you want in focus
- then activate DOF in the VrayCamera tab of the render settings
- set the aperture size to decide how blurry you want the DOF to be
- render

This setup works with regular C4D cameras, but all settings are global and controlled by the values you set in the render settings, meaning that if you have 50 cameras, they will all share the same aperture size and subdivision.

If you want to use a VrayCamera tag, then do as follow:
- no need to enable DOF in the render settings
- set your camera tag onto the camera object
- enable DOF in the Sampling tab of the camera tag (allows you to define local settings for each camera)
- the DOF amount is controlled by the f-number, the global settings don't have any effect, since you are using real world camera values. So, it also depends on the size of your scene and the size of the objects.
- Adjust the shutter speed (be careful, shutter speed has an impact on motion blur, if you use it) and ISO values (or just deactivate the exposure if you don't want to fiddle with this).

I didn't get the strange artefacts you got using IR and LC. Can you remember what settings you used?

Here is my result and the scene file :
http://www.fluffy4d.com/files/dof.jpg

Scene file (http://www.fluffy4d.com/files/dof.zip)

[akiefer]

I think there were two problems with my scene:

- mograph for the cubes

- scale; I am not sure but it may be possible the scene was several thousand centimeters deep and as such the dop was almost not visible...

But that last one is a guess...

Albert

[stefan]

scale is essential for dof!

as in reals world. in small scale you have very much dof, in huge scale almost none:-)

mographed object do work in vray.

cheers
stefan