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IRAY HDRI Environment

ValkeerieValkeerie Posts: 159
in Technical Help (nuts n bolts)

I have large HDRs which I load into the Environment Map slot. Some I've downloaded, some I've made with Vue (e.g. 8k x 4k). They all have the same problem.

When I am rendering in real-time, interactive mode, and moving the camera, the environment image is sharp. When the camera stops moving, the image blurs over the course of a couple of seconds. The whole environment goes out of focus. When I move the camera it becomes sharp again.

When I do the final photoreal render it is blurry.

This has been driving me insane - I've tried every environment and camera option and nothing is fixing it. I have some excellent HDRs and they look great when the camera is moving. They look pants when it stops.

????

Thanks,

Valkeerie
 

Comments

  • Richard HaseltineRichard Haseltine Posts: 100,990

    Do you have depth of field on for your camera? It won't preview while dragging, so that would be consistent with what you describe.

  • ValkeerieValkeerie Posts: 159

    No I don't have DoV. I did spend an age messing with DoF extreme values to see if that made a difference, but it is the same with and without.

     

  • mjc1016mjc1016 Posts: 15,001

    What happens if you create a new camera and don't move it?

     

  • ValkeerieValkeerie Posts: 159
    mjc1016 said:

    What happens if you create a new camera and don't move it?

    Then it behaves as I described above. I've just done it:

     - boot DAZ studio 4.8
     - create camera
    - disable headlight
    - load HDR into environment map

    - finite sphere

    - draw dome

    and hey, the environment is sharp but renders blurry, both real-time and final renders.

     

    Valkeerie

     

  • mjc1016mjc1016 Posts: 15,001
    edited December 2015

    And if you turn off finite?

    If there is not DoF and the image is sharp to begin with...the only other thing I can think of...it's out of focus.  And as far as I can figure, the only way that can happen...it's 'too big' for the size of the finite sphere.

    Post edited by mjc1016 on
  • ValkeerieValkeerie Posts: 159
    mjc1016 said:

    And if you turn off finite?

    If there is not DoF and the image is sharp to begin with...the only other thing I can think of...it's out of focus.  And as far as I can figure, the only way that can happen...it's 'too big' for the size of the finite sphere.

    I see the same thing happening using a finite and an infinite sphere. Yes, it seems out-of-focus. Anytime I make a change to the environment it pops back into focus, and then drifts out of focus over 4-5 rendering steps, like somone pulling focus.

    I only mentioned the sharpness while moving the cam because I knew someone would say the HDR isn't sharp enough, when it clearly is, and I can see that it is.

    The real issue is that the lack of focus appears on the final photoreal render. I encountered this back when Iray was released, and I try again with each release of Studio hoping there was an issue and it is fixed, but 9 months later I still can't use an HDR as a skydome. This is doubly annoying because I can generate gorgeous skydomes to order using VUE. And trebly annoying because nobody is reporting an issue :-)

    Valkeerie

  • FishtalesFishtales Posts: 6,119

    That sounds like a setting in the rendering settings.

    The ones that jump to mind.

    Bloom Filter

    Gaussian Filter

    Environment Lighting Blur

     

  • ValkeerieValkeerie Posts: 159
    Fishtales said:

    That sounds like a setting in the rendering settings.

    The ones that jump to mind.

    Bloom Filter

    Gaussian Filter

    Environment Lighting Blur

     

    I've checked. Environmental lighting Blur is Off. Path Space Filtering is Off. I just tried messing with filtering options, but they aren't making a difference to my issue.

    I've attached an image showing an 8k x 4k HDR made in Vue. It couldn't be much simpler - dusk with the Moon on the horizon. You have to take my word for it when I say the moon is sharp with proper Man-in-the-Moon definition, but it renders  out of focus as you can see.

     

    Ankou.png
    1000 x 1667 - 316K
  • ValkeerieValkeerie Posts: 159

    Aha! The benefits of being asked lots of question.

    I have just switched my real-time rendering mode from interactive to photoreal, and it is much better. I can only assume I have been forgetting to switch rendering modes during setting up. I could absolutely swear that is not the case (done this dozens of times) but I'll roll with this answer for the time being :-) Thank you for suggestions. I may be back ...

    Valkeerie

    Ankou 1.png
    1000 x 1667 - 449K
  • FishtalesFishtales Posts: 6,119

    I've never used Interactive so I can't help there but the image looks pixilated which usually means it is rendering a low resolution image.

  • prixatprixat Posts: 1,588

    The default Gaussian Blur of 1.5 is a bit too high for my taste. I routinely turn it down to 1.1.

    If I really ramp it up (to around 8) it gets applied with the same gradual blurring you mention.

  • FishtalesFishtales Posts: 6,119

    I keep Gaussian Blur set at 1.2 :)

    The setting for Gaussian Blur will depend on the size of image. When I take photographs from my camera into PS I find the Gaussian Blur setting looks better at a low setting for small images and a large setting for big images, as low as 0.5 and up to 2.0. The 1.2 seems to work on most normal size images so that is why it is set at that in DAZ as all my renders are set to average sizes, mostly 1280x960 or 1000x750.

  • ValkeerieValkeerie Posts: 159
    prixat said:

    The default Gaussian Blur of 1.5 is a bit too high for my taste. I routinely turn it down to 1.1.

    If I really ramp it up (to around 8) it gets applied with the same gradual blurring you mention.

    Thanks. Mine is set to the default 1.5 - I'll try some experiments with a lower setting. Thanks also Fishtales.

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