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Iray Shadows...

yodanniephantomyodanniephantom Posts: 7
in Daz Studio Discussion

Anyone know how to get subtle shadows in Iray like these without having flat renders? http://elianeck.deviantart.com/art/After-party-576894953 or http://elianeck.deviantart.com/art/Chinese-dream-567127373

I've basically tried everything with my mesh lights, so is it my IBL light that's producing harsh shadows? 

Comments

  • evilded777evilded777 Posts: 2,465

    When you say mesh lights, do you actually mean mesh lights (solid geometries with an emissive surface) or spotlights set with a geometry?

    Either way, you are going to have to either: make the light larger or move it further away, or both.  Spotlights are easier to work with in this way, and since you can make them mimic a mesh light...plus they give better specular and are generally faster...

  • prixatprixat Posts: 1,590

    The 'after party' image looks like a 'mostly' evenly lit IBL, possibly with a little fill from the left.

    I'm not sure an IBL was used on the 'chinese' one, looks like a single large lightbox.

  • jtbetheljtbethel Posts: 43

    Have you turned off your camera headlights

  • Former DAZ CustomerFormer DAZ Customer Posts: 167
    edited December 2015

    Sharpness of shadows is determined by the apparent size of the light source(s), in real life as well as Iray.  It looks like they used a large light source just a short distance off camera left.  It also looks like it is rectangular, vertically oriented.  Adjust your width as needed to achieve the desired falloff shadows on the sides. :-)

    Also look into your gamma setting, if aren't planning to post-process in Ps or such.  Theres a thread on here about that: http://www.daz3d.com/forums/discussion/54913/approaching-realism-in-daz-studio-and-gamma-correction-demystified

    Post edited by Former DAZ Customer on
  • SzarkSzark Posts: 10,634

    Todays Quick TIP: To point and position plane mesh light, load a plane and a Camera (turn off Headlamp if in Iray via the Parameters Pane when the camera is selected), 0 out all the camera's position parameters, rotate the plane so the normal is facing the same way as the camera (with the Translation Tool selected, the Normal is shown by the Green Y Axis Translation Arrow when the Translation Tool is in Local Coordinates Mode which can accessed via the Tool Settings Pane when the tool is selected.) In this case rotate the plane on the X axis by -90. Then parent the Plane to the Camera. Now you have a camera with a light attached for easy positioning and when you zoom the cam in and out the plane moves with it.  Just resize the plane and the camera will stay put. You could always rename the camera and lock it in place when set up.

  • mjc1016mjc1016 Posts: 15,001
    Szark said:

    Todays Quick TIP: To point and position plane mesh light, load a plane and a Camera (turn off Headlamp if in Iray via the Parameters Pane when the camera is selected), 0 out all the camera's position parameters, rotate the plane so the normal is facing the same way as the camera (with the Translation Tool selected, the Normal is shown by the Green Y Axis Translation Arrow when the Translation Tool is in Local Coordinates Mode which can accessed via the Tool Settings Pane when the tool is selected.) In this case rotate the plane on the X axis by -90. Then parent the Plane to the Camera. Now you have a camera with a light attached for easy positioning and when you zoom the cam in and out the plane moves with it.  Just resize the plane and the camera will stay put. You could always rename the camera and lock it in place when set up.

    And this tip is not renderer specific.  You can use this same setup for any renderer usable in Studio, just by altering what you apply to the plane to make it emissive.  Use the emissive shader for the appropriate renderer.

  • SzarkSzark Posts: 10,634

    Thanks for adding that mjc I will place it over in my render thead too.

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