Octan camera controls?

[EditRoom]

Hi!
Just did som initial test with Octane and I find the Camera to be a bit confusing.
First I have to choose the "thinlens" camera to get the depth of field to work.
When I change the aperture on the CameraImager, the depth of field doesn't change at all, the only way to increase or decrease the DOF is to change the value in the "thinlens" settings. This doesn't make any sense to me.
Is it supposed to be that way?

[aoktar]

what about auto focus option? If it's enabled you can't control DOF point

[EditRoom]

Thank's.
The autofocus is turned off and I can move the focal plane. The problem is that the camera's aperture doesn't have any effect on the DOF.

[aoktar]

What's your version?
aperture is on Thinlens tab. And must effect if you are not doing some mistakes. There is a section on manual for that, also some samples to check.

http://render.otoy.com/forum/viewtopic.php?f=30&t=36331

[EditRoom]

Yes, I just saw that the 1.0 version was avalable, I installed the .96V.
Maby It will work with that. Thank's!

The thinlens aperture setting makes no sense to me regarding the values, I can understand the concept of a thinlens though.

[aoktar]

aperture is working as dof amount factor. But it's not a focal point. you should set that with focal depth parameter or camera target object.
Also liveviewer has picking tool for DOF distance

[EditRoom]

Yes, but the focal point is not the issue, it's the aparture.
If I would set a camera's aperture to 2.8 for example, I would expect a shorter depth of field than let's say an aperture of 11.
This is not the case with the Camera Imager, nothing changes except for the exposure amount.
The only way to get the DOF to change is to use the aperture in the thinlens settings. The values goes from Zero and up, where a higher number makes the DOF shorter, completely the opposite of how a lens aperture works.
This doesn't make sens to me.
It would be nice to have some kind of correlation between the Camera Imager and the thinlens, So I can expect the same kind of DOF results as I would with a real world camera. Otherwise it's going to be really hard to match the Octane camera to real footage for example.

[aoktar]

in future we may have real camera settings, but current system that's it, sorry

[EditRoom]

That would be great!
I really like what you have done so far!
Can you share some info on how the aperture in thinlens relates to different lens apertures with different focal length?

[brasco]

Yes, but the focal point is not the issue, it's the aparture.
If I would set a camera's aperture to 2.8 for example, I would expect a shorter depth of field than let's say an aperture of 11.
This is not the case with the Camera Imager, nothing changes except for the exposure amount.

Agreed, it's a bit odd. Maybe we should request it in the general forums as it's Octane's core. Maybe they have an explanation for the workflow?

cheers
brasc