DOF too deep(not blurry)

[Vizioen]

mmmm....standard fstop 8 shoulb actually 0.8 if you are working in cm

Yeah what I was trying to say is that the standard aperture size (which is set to 8 ), is actually 80 when working in cm.

[Grigio18]

Hey guys, something is not right here, maybe I am wrong but...
I did a simple test, and working in cm and with an aperture of 8 the representation of the depth of field of the physical camera of Max is correct ...

the target is placed at 100 cm from the camera, so the part in focus should be around 15.5 cm for a 35 mm lens, and it's matching...
Same for the vray physical camera





It's the same with the vray camera..

[Vizioen]

Does it look correct when rendering?

[Grigio18]

Does it look correct when rendering?

I don't want to give you a random answer, I don't have a camera here to set up a realistic test, but I think so...

[piotrus3333]

I've never encountered this issue. System Units cms. VRayPhysicalCamera, film gate 36mm, 50mm lens, f8. focus at 2m gives dof of ~65cm (175 to 240cm). renders ok.

[fixeighted]

That is bizarre....not sure what to say really.
Setting Max's units to mm gives the 'correct', or expected, results. Setting to cms does not.
I'm at a loss therefore to explain how your setup is working....

[piotrus3333]

bizarre indeed.
2020 max file:
VRayPhysicalCamera cm vs mm.zip

[kosso_olli]

If your f-stop is 1.4 with mm as units, it needs to be 0.14 with cm as units.
We should probably make this clear in the docs.

What? Is it the same with the native 3dsMax Physical Camera?

[^Lele^]

What? Is it the same with the native 3dsMax Physical Camera?

The "native" max physcam is our code, so yes, it's the same.
The above quote is false, however, and i said so a few posts later.

[kosso_olli]

Well, I'm wondering why this doen't seem to be an issue here. We have to match photographic reference on a daily basis, and so far, the DOF settings more or less matched the shot input (with a few exceptions, but those are quite rare). Also working in CM setup.

[^Lele^]

We are investigating the matter, and haven't come to a conclusion yet.

[Joelaff]

Definitely a scaled camera mangles the DOF. Not sure if this is the issue or not, but something to watch out for.

[Vizioen]

We are investigating the matter, and haven't come to a conclusion yet.

Hi Lele is there a conclusion to this story yet? As I'm using DOF again

[^Lele^]

Inquiring, we didn't get to a conclusion earlier, and then it slipped away.

[Vizioen]

Thank you, because I'm trying the values (working in cm) as suggested earlier and although it's easier to get a DOF now, I feel like I'm not supposed to get so much DOF on an F-stop of 8 ( set it to 0.8 ) as suggested. Or did I misunderstand?