OTOY Forums

Are you able to get such an effect in the real world? What you're talking about sounds like Bias, and of course Octane is supposed to be unbiased. If I saw such an effect it would look phony to me.

Have you played with Aperture and Aperture Edge in the Camera: ThinLens Render Target node?

You say you rotate a null for DOF amount. I've never heard of that. How does that work? Unless it's having an effect on its distance from the camera, but I don't see how that works.

hdace wrote:Are you able to get such an effect in the real world? What you're talking about sounds like Bias, and of course Octane is supposed to be unbiased. If I saw such an effect it would look phony to me.

Ofcourse, I have Canon DSLR 7D and i can make less shallow DOF while maintaining very blurry backgorund, somehow i can't achieve such effect in Octane as much as i tried.

For Rotatign DOF amount it's just linked to null object, nothign special. Here is screengrab for moving DOF and rotatign DOF/Amoount in same null model

cheers

I'm not sure what you're doing with your Canon, but as I recall, with a film camera, one would try to lower the lighting, and open up the aperture to make the focus zone shallower. You could try that with Octane too.

Maybe try lowering the Exposure in the Camera node?

I was very curious about this so I conducted a test. I didn't have to use anything other than the usual two controls. You can see the two robots near and far are very out of focus and the middle one is in perfect focus. The two near and far are exactly four meters in each direction from the center one.

hdace wrote:I was very curious about this so I conducted a test. I didn't have to use anything other than the usual two controls. You can see the two robots near and far are very out of focus and the middle one is in perfect focus. The two near and far are exactly four meters in each direction from the center one.

Screen Shot 2015-09-23 at 10.45.49 .png

Sure that's what i'm getting to, but can you get that 2nd and 3rd robot are focused and only first one is in blur ? I can'texplain it fulyl but it always looks to me a bit of fake,but maybe if we could have DOF blur shapes liek Pentagon, Octagon, user selectable it might feel more relaistic.

The only thing to do is place the focus null at Z +2, halfway in between the two robots. The answer is no. They will not be in focus if Robot 1 is out of focus. I can only get robots 2 & 3 to be equally "soft" with Robot 1 very out of focus. In order to get them to be roughly in focus would be to reduce the Aperture and Aperture Edge settings. But then Robot 1 is not nearly as out of focus as before.

So I see what you're getting at. I assume with a real camera you can set the focus to infinity and the two far robots will be in focus but the near one will be out of focus. The trouble is, with that setup in mind, you need greater distances than just 8 meters, even with a real camera. I still think Octane is behaving like a real camera, but I could be wrong.

I agree that it should be possible to create a setting that would place everything beyond the focus point in focus, or everything nearer than the focus point in focus, but if they keep adding things that are "not realistic" then Octane will become more and more biased. I am not strongly in favor of this idea or against it. But it was an interesting exercise!

hdace wrote:The only thing to do is place the focus null at Z +2, halfway in between the two robots. The answer is no. They will not be in focus if Robot 1 is out of focus. I can only get robots 2 & 3 to be equally "soft" with Robot 1 very out of focus. In order to get them to be roughly in focus would be to reduce the Aperture and Aperture Edge settings. But then Robot 1 is not nearly as out of focus as before.

So I see what you're getting at. I assume with a real camera you can set the focus to infinity and the two far robots will be in focus but the near one will be out of focus. The trouble is, with that setup in mind, you need greater distances than just 8 meters, even with a real camera. I still think Octane is behaving like a real camera, but I could be wrong.

I agree that it should be possible to create a setting that would place everything beyond the focus point in focus, or everything nearer than the focus point in focus, but if they keep adding things that are "not realistic" then Octane will become more and more biased. I am not strongly in favor of this idea or against it. But it was an interesting exercise!

Sure, that's exactly what i was talking aobut. I can get "inifnite" depth on real Photo/Camera but can't really mimic that with Octane so far and yet real cameras are real so not sure it's biased/unbiased hing in this case .

Thanks for testing, I appreciate.