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how to set up depth of field?

MistaraMistara Posts: 38,675
edited December 1969 in Carrara Discussion

i know how to do it in DS.

hoping its that easy in CA?

i saw the thing how to blur the whole scene.

but how do you set up the non-blur area?

Comments

  • JoeMamma2000JoeMamma2000 Posts: 2,615
    edited December 1969

    Yes it's easy. It's a camera thing. Select the camera you're rendering with, and in the Effects tab you can enable the Depth of Field thingy. Then you tell it how far from the camera you want to be in focus, and how much to blur the non-focus area. The little preview on the right side is where you can click in the scene to set the clear area, the focal point thingy.

  • DUDUDUDU Posts: 1,945
    edited December 1969

    Yes, but I noticed two things with this method:
    1- The sharpness of the focus point isn't as good as a "normal" render, especially in animation.
    2- The blur is unified, it does not matter the distance from the camera.
    For this reason, in this case, I make my render of the principal subject with an alpha layer and the remainder in various layers whose blur varies according to the distance from the focus point.

  • JoeMamma2000JoeMamma2000 Posts: 2,615
    edited December 1969

    If you're talking quality, IMO the depth of field in Carrara is horrendous. You can get far better results by doing it in Photoshop, or some other app that is designed for DOF effects. In my view, the DOF in Carrara looks like someone smeared grease on the lens... :)

  • TangoAlphaTangoAlpha Posts: 4,584
    edited December 1969

    Also, Carrara's DOF doesn't work with things like Dynamic Hair.

  • evilproducerevilproducer Posts: 9,040
    edited January 2015

    Misty Whisky said:
    i know how to do it in DS.

    hoping its that easy in CA?

    i saw the thing how to blur the whole scene.

    but how do you set up the non-blur area?

    As Joe says, you select your camera and go to the camera's Effects tab, enable the little Lens Blur checkbox and click the edit button to open the editor window.

    If the window is too small, you can resize it by dragging the lower right corner of the window outwards. This will give you a larger thumbnail. To set the focal point or in-focus subject in your scene, click the little cross hair icon just to the left of the thumbnail and then click to set the cross hair on what you want to focus on. You change it, by clicking on the cross hair icon again and then clicking on a different area.

    The blur percentage slider may need to be exaggerated depending on the scene.

    Regarding Joe's comments about the quality, you will get a better effect if you render a depth pass and use Photoshop or Gimp (or some other image editor) to create the DOF, instead of the standard DOF effect.

    There are two DOF effects that Carrara can do and both are accessed through the DOF editor. The standard one is a post render effect applied by Carrara after the render is done. This is the one Joe says looks like a greased lens. The other one is the Raytraced DOF, which is done as the image renders. It is orders of magnitude better, but it also orders of magnitude slower.

    For still images, my preferred method is Joe's method- rendering a depth pass and creating it in Photoshop.

    My preferred method for animations is to use the standard Carrara DOF, as it looks good enough for an animation especially if I am animating a change of focus. It may be easier to use the depth pass and do it in a video editor/compositor, but I haven't tried it yet.

    Edited to add larger render.

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    Post edited by evilproducer on
  • evilproducerevilproducer Posts: 9,040
    edited December 1969

    Tim_A said:
    Also, Carrara's DOF doesn't work with things like Dynamic Hair.

    Great point! But to clarify, the standard DOF doesn't work with Carrara's hair. I think the raytraced DOF does, but oh-my-gawd-is-it-slow!

    Also the depth pass doesn't see dynamic hair, or clouds or alphas. There are other passes you can render, such as the volume primitive to get the hair and clouds to show. composite them with the depth pass and viola!
    http://www.daz3d.com/forums/discussion/42599/P105/#634024

  • MistaraMistara Posts: 38,675
    edited January 2015

    funny they put (slow) next to the option.

    learning the habit of looking under that effects tab :)


    Thanks all!!

    Post edited by Mistara on
  • MistaraMistara Posts: 38,675
    edited January 2015

    playing with the DOF :lol:

    not toooo slow, prolly boosted by the 64 bits.

    was trying to make the tabletop look like a tablecloth. the table top made wonky with the checker shader, but kinda like it.
    was hoping to find a ready burbur carpet shader for the plane.


    lots of good stuff in the objs library. luv the rocking chair extraspecially.

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    Post edited by Mistara on
  • MistaraMistara Posts: 38,675
    edited December 1969

    is there a way to set up like a radius from the focus to the blurred area?

    like can i tighten the focus area to the plate of eggs or widen it to include the teapot?

    thanks!

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